isoplus design-catalogue - chapter double pipe · Volume weight ρ kg/dm³ 7,87 Elastic modulus E...

DOUBLE PIPE General D 1.0 Advantage and application D 1.1 Pipes D 2.0 Technical operational data D 2.1 Bowed pipe D 2.2 Components Elbows horizontal and vertical D 3.0 Branch 90°, straight D 3.2 Shut-Off-Valve D 3.3 Venting D 3.4 Reducing Piece D 3.5 Bifurcated Pipe D 3.6 Connection Couplers / Shrinkable-, D 4.0 reduction-, end- and isojoint II®- coupler D 4.1 Accessories One-time-ball-valve and end cap D 5.0 Wall duct D 5.1 Expansion pad and PUR-foam D 5.2 Assembling supports and warning tape D 5.3 Assembling Transportation and unloading D 6.0 Storage D 6.1 Underground Work and trench measurements D 7.0 Sand-Bed and Re-Filling D 7.1 Covering height D 7.2 Pipe Construction and connection technology D 8.0 Fitting pieces D 8.1 House connections, Z- and U-elbow D 8.2 Height-jumps and storey D 8.3 Shut-Off-Valve D 8.4 Leak Detecting IPS-Cu® D 9.0 Project Work Double pipe compound system D 10.0 Static and admissible laying length D 10.1 Expansion compensation D 10.2 Thermal prestressing and cold laying D 10.3 Trench curvature D 10.4 Branches D 10.5 Bifurcated Pipes D 10.6

Copy only after agreement with isoplus Fernwärmetechnik GmbH; Technical modifications reserved; Edition 04/2005

internet: www.isoplus.de • e-mail: [email protected]

DOUBLE PIPE

D 1.0

General The patented isoplus-double pipe is a perfect solution for delivering district heating with ecological and economical advantage to the consumer. Due to the special oval-geometry of the jacket-pipe and the connected insulation layer an insulation thickness will be reached which can be compared with reinforced insulated single pipes. The vertical position of primary and secondary line leads to a thermal-blocking which will result in essential reduction of heat-loss. With this principle of construction an optimum of insulation from PUR-hard foam will be reached, by minimum use of material. The result is an ideal insulation technology. In order to benefit from all advantages of the isoplus-double pipe the typical properties of this pipe-system should be known. The following pages should help for this. Concerning special questions we ask you to contact directly our expert engineers.

Heat-Insulation isoplus-double pipes will be tested with Polyurethane-hard foam (PUR), acc. to EN 253 and insulated by using component A = Polyol, bright and B = Isocyanat, dark. During discontinuous production procedure foamed between medium pipe and jacket- pipe, a high quality insulation with excellent thermal conductivity λPUR = maximal 0,0275 W/(m•K), at low specific weight will develop due to an exothermal chemical reaction. isoplus is using generally 100 % freon free driven and therefore environmental-friendly PUR-foam. This means lowest possible ODP-and GWP values at enormous heat insulation. ODP (ozone reducing potential) = 0, GWP (green house potential) = < 0,001 !

Jacket-Pipe As jacket-pipe the reliable PEHD pipe with plain surface will be used for isoplus-double pipe. Polyethylene High Density is a seamless extruded, shock- and break proof, viscoplastic hard polyethylene up to -50° C. General quality requirements acc. to DIN 8075. Corona treated for optimum compound with PUR-hard foam acc. to EN 253. Measures respectively wall thickness at least acc. to EN 253, thermal conductivity λPE80 = 0,40 W/(m•K). PEHD is resistant against weather conditions and UV-rays in a high extent as well as practically against all chemical reactions which may develop in the soil. Therefore PE is declared in all national and international standards as the only suitable material for direct buried pipe-lying. Characteristics see Design Manual, chapter pipes, page R 4.0.



DOUBLE PIPE

D 1.1

Advantages compared with two single pipes

essential less heat-loss lower pipe crown-covering height 50% reduced use of connection couplers reduced excavated material and re-installation better crown-pressure resistance due to oval pipes more economic production of preinstalled pipe system more easy locating in obstructed areas, city centres etc. no trench jumps at branches (flow- and exit on same level) optimised insulation thickness at primary- and secondary line essential reduction of expansion pads at angles and T-pieces no additional fittings are required for expansion compensation more fast total construction time, shorter traffic hindrance etc. double working distance of leak detecting- and location systems less time for assembling of couplers (trench may be re-filled earlier) pipe-static dimensioning only for medium temperature of primary- and secondary line

Medium Pipe

Medium pipe of isoplus-double pipe consists of a high frequency welded (W), circular, unalloyed and solid steel (R), material-No. 1.0254, with welding factor V = 1,0 respectively 100 % (B) calculated tension. Named St 37.0 W-B, and technical delivery conditions acc. to DIN 1626 as well as P235TR1 acc. to EN 10 217 T 1. Acceptance certificate (APZ) acc. to EN 10 204-3.1 B. From wall thickness > 3,2 mm with weld seam preparation by 30° bevelled ends acc. to DIN 2559 T 1, class 22 respectively ISO 6761. Connection Technology

Connections of steel pipes up to DN 80 may be carried out by autogenously welding, however starting from DN 100 generally by Electro-welding. Operating Conditions

Maximum permissible operating temperature Tmax: 130° C Maximum permissible operating pressure pB: 25 bar Maximum permissible axial tension σmax: 190 N/mm² Leak detecting: IPS-Cu® as norm Possible liquids: Heating water as well as other material resistant liquids

Technical data St 37.0 W-B at 20° C Property Unit Value Property Unit Value Volume weight ρ kg/dm³ 7,87 Elastic modulus E N/mm² 212.000 Tensile stress Rm N/mm² 350 - 480 Thermal conductivity λ W/(m•K) 52,33 Yield stress Re N/mm² 235 Specific heat capacity cm kJ/kg°C 0,46 Wall roughness k mm 0,02 Thermal expansion coeff. α at Tmax K-1 12,7 • 10-6



DOUBLE PIPE

D 2.0

Dimensions respectively Types

Dimensions Steel Pipe St 37.0 W-B, Nr. 1.0254

Outside-∅

Wall- thickness

Norm- delivery-length

Jacket-Pipe Outside-Dimension resp. overall height

Ridge- height

Weight without water

Nominal Diameter / Dimension

in Type

DN Inches da

in mm s

in mm L

in m b • h

in mm hs

in mm G

in kg/m D - 25 2 • 25 1“ 33,7 3,2 12 99 • 144 20 6,67 D - 32 2 • 32 1¼“ 42,4 3,2 12 131 • 184 20 8,87 D - 40 2 • 40 1½“ 48,3 3,2 12 131 • 184 20 9,74 D - 50 2 • 50 2“ 60,3 3,2 12 136 • 211 25 12,30 D - 65 2 • 65 2½“ 76,1 3,2 12 176 • 261 25 16,40 D - 80 2 • 80 3“ 88,9 3,2 12 196 • 292 30 19,32 D - 100 2 • 100 4“ 114,3 3,6 12 238 • 367 30 28,54 D - 125 2 • 125 5“ 139,7 3,6 12 267 • 418 35 35,04 D - 150 2 • 150 6“ 168,3 4,0 12 298 • 475 45 45,77

The mentioned steel wall thicknesses are corresponding with the minimum requirements acc. to the AGFW-guidelines FW 401 (working association district heating e.V.) and ÖNORM (Austrian institute for standardisation). These will be generally calculated against inner pressure [p] acc. to DIN 2413. Length of bare steel pipe ends 220 mm ± 20 mm. Within the area of the mentioned ridge-connections, which are marked at the jacket-pipe with labels, as well as 50 cm before and thereafter, the pipe may not be cut for preparing of fitting-length. In order to improve and to follow the technical development we will reserve technical modifications of the values mentioned in the table. Admissible laying length see page D 10.1.1 Material specification medium pipe see page D 1.1 Material specification jacket-pipe see Design Manual, page R 4.0 Material specification PUR-hard foam see Design Manual page Z 8.0 Thermal conductivity, specific heat-loss and capacity see page D 2.1



DOUBLE PIPE

D 2.1

Heat Loss + Capacity

Dimensioning Heat Loss Coefficient Water-

content Volume-

Flow Flow-Speed kDR

Transmitted Capacity P in kW at spread

qDR per Pipe Meter in W/m at

Average Temperature TMType

v in l/m

V‘ in m³/h

w in m/s 20 K 30 K 40 K

in W/(m•K) 100 K 60 K 50 K

D - 25 0,585 1,686 0,80 39 59 78 0,2745 27,451 16,471 13,725 D - 32 1,018 3,298 0,90 77 115 153 0,2720 27,204 16,322 13,602 D - 40 1,379 4,964 1,00 115 173 231 0,3037 30,368 18,221 15,184 D - 50 2,282 9,036 1,10 210 315 420 0,3496 34,959 20,975 17,479 D - 65 3,816 16,483 1,20 383 575 767 0,3522 35,216 21,130 17,608 D - 80 5,346 25,017 1,30 582 873 1.164 0,3715 37,145 22,287 18,573

D - 100 9,009 45,405 1,40 1.056 1.584 2.112 0,3913 39,128 23,477 19,564 D - 125 13,789 79,423 1,60 1.847 2.771 3.695 0,4308 43,083 25,850 21,542 D - 150 20,182 130,77 1,80 3.042 4.563 6.084 0,4691 46,911 28,146 23,456

w = Flow speed; has to be determined installation-specifically kDR = Thermal transmission coefficient (k-value) buried double pipe, acc. to ISO 7345 also U

In order to reach the corresponding absolute heat energy loss [Q‘], the trench- respectively pipe length [L] has to be given in „m“ and period [t] in „h“ which has to be calculated.

Q' = q • L • t

1000 [kW•h] (61) or: Q' = kDR • TM • L • t

1000 [kW•h] (62)

Example:

Q' = 19,564 • 150 • 720

1000 [kW•h] (61) or: Q' = 0,3913 • 50 • 150 • 720

1000 [kW•h] (62)

Result (61) + (62): Q‘ = 2.113 kW•h or: 2.113 : 720 = 2,93 kW Heat Loss Comparison Double- to Single Pipe, TM = 70 K

Double pipe 2 x Single pipe - Standard insulation 2 x Single pipe - 1 x reinforced insul. Heat Loss PEHD-∅ Heat Loss PEHD-∅ Heat Loss

Type kDR in W/(m•K)

qDR in W/m

Da in mm

kER in W/(m•K)

qER in W/m

Saving in % Da

in mm kER in

W/(m•K)qER

in W/m

Saving in %

D - 25 0,2745 19,216 90 0,3342 23,395 17,86 110 0,2785 19,493 1,423 D - 32 0,2720 19,043 110 0,3417 23,919 20,39 125 0,3026 21,184 10,11 D - 40 0,3037 21,258 110 0,3922 27,457 22,58 125 0,3416 23,912 11,10 D - 50 0,3496 24,471 125 0,4376 30,631 20,11 140 0,3819 26,735 8,467 D - 65 0,3522 24,651 140 0,5142 35,992 31,51 160 0,4282 29,977 17,77 D - 80 0,3715 26,002 160 0,5304 37,130 29,97 180 0,4489 31,420 17,25 D - 100 0,3913 27,390 200 0,5624 39,369 30,43 225 0,4714 32,995 16,99 D - 125 0,4308 30,158 225 0,6490 45,431 33,62 250 0,5428 37,994 20,62 D - 150 0,4691 32,838 250 0,7672 53,704 38,85 280 0,6142 42,995 23,62

The mentioned data are based on a medium specific heat capacity [cm] of the water 4.187 J/(kg•K). Soil covering height [ÜHH] of 0,60 m (Surface jacket pipe up to surface of the area), heat conductivity of soil [λE] of 1,2 W/(m•K), a medium temperature of soil [TE] of 10° C as well as a medium pipe distance of 150 mm at single pipes. (59) ⇒ TM = (TVL + TRL) : 2 – TE; Example: (100° + 60°) : 2 – 10° = 70 K average temperature. The heat loss of the isoplus-double pipe has been determined by assistance of an independent FEM-calculation (Finite Element Simulation) and additional in accordance with Zeitler.



DOUBLE PIPE

D 2.2

Bowed Pipe

Dimensions Steel Pipe Circle segment at rmin and 12,00 m

Nominal- diameter

Outside- diameter

Max. perm. bow-angle

per 12,00 m

Minimum- bending-

radius Secant- length

Segment- height

Tangent- length

in da α r sL sh tL Type

DN in mm in ° in m in m in m in m D - 25 2 • 25 33,7 45 15,28 11,69 1,16 6,33 D - 32 2 • 32 42,4 45 15,28 11,69 1,16 6,33 D - 40 2 • 40 48,3 39 17,63 11,77 1,01 6,24 D - 50 2 • 50 60,3 35 19,64 11,81 0,91 6,19 D - 65 2 • 65 76,1 31 22,18 11,85 0,81 6,15 D - 80 2 • 80 88,9 29 23,71 11,87 0,76 6,13

D - 100 2 • 100 114,3 27 25,47 11,89 0,70 6,11 D - 125 2 • 125 139,7 21 32,74 11,93 0,55 6,07 D - 150 2 • 150 168,3 17 40,44 11,96 0,44 6,04

Bowed pipes are bended mechanically, according to the direction of the pipeline and the permissible bending radius, corresponding to the data of the local management of works (bowed angle and radius) by use of approx. 2,00 m long straight pipes. Orders should clearly indicate angle, radius and direction of bending, left or right (depending from course of leak detecting). This parameter will be determined by isoplus in case of requirement. Project information bowed pipe see page D 10.4 and Design Manual, chapter project work page P 6.2


internet: www.isoplus.de • e-mail: [email protected] D 3.0

COMPONENTS

Elbow 90°, horizontal (w)

Dimensions Steel Pipe Steel Elbow

Outside- ∅

Wall- thickness Radius

Jacket-Pipe Dimension resp.

overall height Length of Angle Nominal Diameter

/ Dimension in Type

DN Inches da

in mm s

in mm r

in mm b • h

in mm A • B in mm

D - 25 2 • 25 1“ 33,7 3,2 125,0 99 • 144 1000 • 1000 D - 32 2 • 32 1¼“ 42,4 3,2 140,0 131 • 184 1000 • 1000 D - 40 2 • 40 1½“ 48,3 3,2 170,0 131 • 184 1000 • 1000 D - 50 2 • 50 2“ 60,3 3,2 125,0 136 • 211 1000 • 1000 D - 65 2 • 65 2½“ 76,1 3,2 155,0 176 • 261 1000 • 1000 D - 80 2 • 80 3“ 88,9 3,2 160,0 196 • 292 1000 • 1000

D - 100 2 • 100 4“ 114,3 3,6 152,0 238 • 367 1000 • 1000 D - 125 2 • 125 5“ 139,7 3,6 190,0 267 • 418 1000 • 1000 D - 150 2 • 150 6“ 168,3 4,0 229,0 298 • 475 1000 • 1000

All medium pipe elbows up to DN 80 at least to measure standard AGFW-guideline FW 401, bowed in one piece, from DN 100 with pipe-elbow acc. to DIN 2605 T 1 and welded pipe socket. Pipe cylinder also acc. to AGFW FW 401. From wall thickness > 3,2 mm with weld seam preparation by 30° bevelled ends acc. to DIN 2559 T 1, class 22 receptively ISO 6761. Length of bare steel pipe ends 200 mm ± 20 mm, ridge-height like pipe bars. The mentioned side lengths are also valid for special xx° elbows. Orders for special degree elbows should generally indicate the complementary angle [α]. For improvements and in order to follow the technical development we will reserve modifications of measures as well as technical modifications of the values mentioned in the table. Material specification jacket-pipe see Design Manual, page R 4.0 Material specification PUR-hard foam see Design Manual, page Z 8.0



COMPONENTS

D 3.1

Elbow 90°, vertical (s)

Dimensions Steel Pipe Steel Elbow

Outside- ∅

Wall- thickness Radius


overall height Length of Angle Nominal Diameter

/ Dimension in Type

DN Zoll da

in mm s

in mm r

in mm b • h

in mm A • B in mm

D - 25 2 • 25 1“ 33,7 3,2 125,0 99 • 144 1000 • 1000 D - 32 2 • 32 1¼“ 42,4 3,2 140,0 131 • 184 1000 • 1000 D - 40 2 • 40 1½“ 48,3 3,2 170,0 131 • 184 1000 • 1000 D - 50 2 • 50 2“ 60,3 3,2 125,0 136 • 211 1000 • 1000 D - 65 2 • 65 2½“ 76,1 3,2 155,0 176 • 261 1000 • 1000 D - 80 2 • 80 3“ 88,9 3,2 160,0 196 • 292 1000 • 1000

D - 100 2 • 100 4“ 114,3 3,6 152,0 238 • 367 1000 • 1000 D - 125 2 • 125 5“ 139,7 3,6 190,0 267 • 418 1000 • 1000 D - 150 2 • 150 6“ 168,3 4,0 229,0 298 • 475 1000 • 1000

All medium pipe elbows up to DN 80 at least to measure standard AGFW-guideline FW 401, bowed in one piece, from DN 100 with pipe-elbow acc. to DIN 2605 T 1 and welded pipe socket. Pipe cylinder also acc. to AGFW FW 401. From wall thickness > 3,2 mm with weld seam preparation by 30° bevelled ends acc. to DIN 2559 T 1, class 22 receptively ISO 6761. Length of bare steel pipe ends 200 mm ± 20 mm, ridge-height like pipe bars. The mentioned side lengths are also valid for special xx° elbows. Orders for special degree elbows should generally indicate the complementary angle [α]. For improvements and in order to follow the technical development we will reserve modifications of measures as well as technical modifications of the values mentioned in the table. ATTENTION: Orders for elbows for height jumps at sublevels or house-lead-in, the installation

position has to be checked in advance and the position for primary and secondary line has to be mentioned. In case of any doubt a detailed drawing should be made.

Assembling information height-jumps see page D 8.3 Material specification jacket-pipe see Design Manual, page R 4.0 Material specification PUR-hard foam see Design Manual, page Z 8.0



COMPONENTS

Branch 90°, straight

Dimensions Steel Pipe Passage (D) Exit / Branch (A)

Outside- ∅

Wall- thickn.

Jacket-Pipe Outside-Dimens.

Passage

Overall lengthPassage / Main line

Dia-meter

Overall- length

Nominal Diameter / Dimension

in Type

DN Inches da

in mm s

in mm b • h

in mm BL1

in mm in

DN BL2

in mm D - 25 2 • 25 1“ 33,7 3,2 99 • 144 1200 25 650 D - 32 2 • 32 1¼“ 42,4 3,2 131 • 184 1200 25 - 32 650 D - 40 2 • 40 1½“ 48,3 3,2 131 • 184 1200 25 - 40 650 D - 50 2 • 50 2“ 60,3 3,2 136 • 211 1200 25 - 50 650 D - 65 2 • 65 2½“ 76,1 3,2 176 • 261 1200 25 - 65 650 D - 80 2 • 80 3“ 88,9 3,2 196 • 292 1200 25 - 80 650 D - 100 2 • 100 4“ 114,3 3,6 238 • 367 1200 25 - 100 650 D - 125 2 • 125 5“ 139,7 3,6 267 • 418 1200 25 - 125 650 D - 150 2 • 150 6“ 168,3 4,0 298 • 475 1200 25 - 150 650

Medium pipe passage and exit at least to measure standard AGFW-guideline FW 401. From wall thickness > 3,2 mm with weld seam preparation by 30° bevelled ends acc. to DIN 2559 T 1 respectively ISO 6761. Length of bare steel pipe ends 200 mm ± 20 mm, ridge-height like pipe bars. All branches will be generally necked-out at the basic pipe, the following pipe cylinder will be welded by a round seam, which can be radio graphed. Branches with the same dimension as well as one dimension smaller are generally produced by use of weld-in T-pieces acc. to DIN 2615 T 1. For improvements and in order to follow the technical development we will reserve modifications of measures as well as technical modifications of the values mentioned in the table. The exit may be used up to the maximum admissible laying length of the corresponding dimension without expanding legs, like L-, Z- or U- elbow. Project work information see page D 10.5 Admissible laying length see page D 10.1.1 Material specification jacket-pipe see Design Manual, page R 4.0 Material specification PUR-hard foam see Design Manual, page Z 8.0


internet: www.isoplus.de • e-mail: [email protected] D 3.2.1

COMPONENTS

Twin-Branch 90°, straight

Dimensions Steel Pipe Passage (D) Exit / Branch (A)

Outside- ∅

Wall- thickn.

Jacket-Pipe-Dimension Passage

Overall lengthPassage / Main line

Dia-meter

Jacket-Pipe-∅

Overall- length

Nominal Diam. / Dimension

in Type

DN Inchesda

in mm s

in mm b • h

in mm BL1

in mm in

DN Da

in mm BL2

in mm D - 25 2 • 25 1“ 33,7 3,2 99 • 144 1200 25 90 500 D - 32 2 • 32 1¼“ 42,4 3,2 131 • 184 1200 25 90 500 D - 40 2 • 40 1½“ 48,3 3,2 131 • 184 1200 25 90 550 D - 50 2 • 50 2“ 60,3 3,2 136 • 211 1200 25 - 32 90 - 110 550 D - 65 2 • 65 2½“ 76,1 3,2 176 • 261 1200 25 - 40 90 - 110 550 D - 80 2 • 80 3“ 88,9 3,2 196 • 292 1300 25 - 50 90 - 125 550 D - 100 2 • 100 4“ 114,3 3,6 238 • 367 1300 25 - 50 90 - 125 600 D - 125 2 • 125 5“ 139,7 3,6 267 • 418 1400 25 - 65 90 - 140 600 D - 150 2 • 150 6“ 168,3 4,0 298 • 475 1400 25 - 80 90 - 160 600

Twin branches are used as transition from a double main pipe line to a house connection with single pipes, i.e. isoflex or isopex. Medium pipe passage and exit at least to measure standard AGFW-guideline FW 401. From wall thickness > 3,2 mm with weld seam preparation by 30° bevelled ends acc. to DIN 2559 T 1 respectively ISO 6761. Length of bare steel pipe ends 200 mm ± 20 mm, ridge-height like double-pipe pipe bars.

All branches will be generally necked-out at the basic pipe, the following pipe cylinder will be welded by a round seam, which can be radio graphed. Branches with the same dimension as well as one dimension smaller are generally produced by use of weld-in T-pieces acc. to DIN 2615 T 1. For improvements and in order to follow the technical development we will reserve modifications of measures as well as technical modifications of the values mentioned in the table.

For reasons of product-technology single pipe branches will be produced generally with standard insulation. Branch length of the single pipes will be possible up to maximum 9,00 m without any expansion legs like L-, Z- or U-elbows.

Material specification jacket-pipe see Design Manual, page R 4.0 Material specification PUR-hard foam see Design Manual, page Z 8.0



COMPONENTS

Shut-Off-Valve

Dimensions Steel Pipe Operating Dome PEHD-Middle Part Outside-

∅


overall height Axes-

distanceOverall- height

Jacket- Pipe-∅

Overall- length

Overall- length Nominal Diameter

/ Dimension in Type

DN Inches da

in mm b • h

in mm a

in mm Dh

in mm Da

in mm l2

in mm L

in mm D - 25 2 • 25 1“ 33,7 99 • 144 250 400 180 900 2000 D - 32 2 • 32 1¼“ 42,4 131 • 184 250 404 225 900 2000 D - 40 2 • 40 1½“ 48,3 131 • 184 250 413 225 900 2000 D - 50 2 • 50 2“ 60,3 136 • 211 250 420 280 900 2000 D - 65 2 • 65 2½“ 76,1 176 • 261 250 424 315 1100 2000 D - 80 2 • 80 3“ 88,9 196 • 292 250 434 400 900 2000 D - 100 2 • 100 4“ 114,3 238 • 367 250 453 450 1000 2000 D - 125 2 • 125 5“ 139,7 267 • 418 300 492 500 1350 2300 D - 150 2 • 150 6“ 168,3 298 • 475 300 513 630 1600 2500

Medium pipe at least to EN 448, from wall thickness > 3,2 mm with weld seam preparation by 30° bevelled ends acc. to DIN 2559 T 1, class 22 respectively ISO 6761. Length of bare steel pipe ends 200 mm ± 20 mm, ridge-height like pipe bars. isoplus ball valve will be delivered with reduced flow as standard version. For improvements and in order to follow the actual technical we will reserve modifications of measures as well as technical modifications of the values mentioned in the table. Assembling will be made at open valve position and will be not permitted at the area of L-, Z- or U-elbows due to bending tension which will occur. After flushing of the line the first closing procedure can be carried out. Position in between should be avoided. Do not over wind the stop position. Using of inexpert prolongation is not permitted. Two PEHD-Slip-on protection pipes, 1,50 m length which may be shortened as well as two conical quarter covers are part of the delivery range. T-key, spindle prolongation or a plug-on gear may be put on this adapter. Assembling information shut-off-valve see page D 8.4 Material specification jacket-pipe see Design Manual, page R 4.0 Material specification PUR-hard foam see Design Manual, page Z 8.0


internet: www.isoplus.de • e-mail: [email protected] D 3.3.1

ACCESSORIES SHUT-OFF-VALVE

PEHD-Slip-on protection pipe This standard protection pipe with a protection cap as well as inside fixed laminate as centring aid is part of the delivery range of a shut-off-valve. The protection pipe will be delivered generally in a length of 1,50 m and will be adjusted directly to the covering height at site. Protecting pipes are mostly ending in a DIN-street-cap or a manhole. Depending from application and nominal diameter different types will be required, which will be all reduced to 140 mm at the upper diameter. Dimensions and special types, i.e. with screw-cap-cover on request.

Spindle-prolongation In case that shut-off-valves will be installed very deep, prolongation should be additionally used. A conical square-nut for putting on the standard dome, respectively a square cover will be part of the delivery range of a shut-off-valve. The prolongation will end again with a square-cover. Depending from dimension and manufacturer of shut-off-valve, different spindle-prolongation are available in standard length of 0,50 m, 1,00 m or 1,50 m. Possible types on request.

T-Key The T-key will be delivered generally in a length of 1,00 m with a conical square-nut. For operation of the shut-off-valve inexpert prolongation of the lever arm is not permitted. Uses of torque increasing units respectively operating elements which are not corresponding with the type are not allowed.



COMPONENTS

D 3.4

Venting, ELÜ

Dimensions Steel Pipe Dimensions Venting

Outside- ∅


overall height Dia-

meter Jacket- Pipe-∅

Axes-distance

Overall- height


/ Dimension in Type

DN Inches da

in mm b • h

in mm in

DN Da

in mm A

in mm H

in mm L

in mm D - 25 2 • 25 1“ 33,7 99 • 144 25 90 150 500 1000 D - 32 2 • 32 1¼“ 42,4 131 • 184 25 90 150 500 1000 D - 40 2 • 40 1½“ 48,3 131 • 184 25 90 150 500 1000 D - 50 2 • 50 2“ 60,3 136 • 211 25 90 150 500 1000 D - 65 2 • 65 2½“ 76,1 176 • 261 25 90 150 500 1000 D - 80 2 • 80 3“ 88,9 196 • 292 25 90 150 500 1000 D - 100 2 • 100 4“ 114,3 238 • 367 25 90 150 500 1000 D - 125 2 • 125 5“ 139,7 267 • 418 25 90 150 500 1000 D - 150 2 • 150 6“ 168,3 298 • 475 25 90 150 500 1000

Medium pipe passage and venting at least to measure standard AGFW-guideline FW 401. From wall thickness > 3,2 mm with weld seam preparation by 30° bevelled ends acc. to DIN 2559 T 1, class 22 respectively ISO 6761. Length of bare steel pipe ends 200 mm ± 20 mm, ridge-height double pipe like pipe bars. All venting branches may not be shortened as they include a foamed in isoplus-ball valve with outside located support-handle. For improvements and in order to follow the actual technical development we will reserve modifications of measures as well as technical modifications of the values mentioned in the table. The not insulated branch-end is manufactured generally with galvanised pipe end with outside thread-connection and an end cap. For manufacturing-technical reasons venting branches will be generally insulated with standard insulation. At areas of L-, Z- or U-elbows the assembling will be not permitted, due to bending tension which will occur. In order to guarantee the operation and access to the venting, the installation should be installed in a manhole acc. to DIN 4034. In case of heavy load traffic SLW 60, the manhole has to fulfil the corresponding construction static requirements. Assembling information like shut-off-valve see page D 8.4 Material specification jacket-pipe see Design Manual, page R 4.0 Material specification PUR-hard foam see Design Manual, page Z 8.0



COMPONENTS

D 3.5

Reducing Piece

Dimensions Nominal Diameter 1 Dimensions reduced Nominal Diameter 2

Dia-meter

Outside- ∅

Jacket-Pipe- Dimension

Dia-meter

Outside- ∅

Jacket-Pipe- Dimension

Overall-length

Type in

DN da

in mm b • h

in mm

Type in

DN da

in mm b • h

in mm L

in mm D - 32 2 • 32 42,4 131 • 184 D - 25 2 • 25 33,7 99 • 144 1500 D - 40 2 • 40 48,3 131 • 184 D - 32 2 • 32 42,4 131 • 184 1500 D - 50 2 • 50 60,3 136 • 211 D - 40 2 • 40 48,3 131 • 184 1500 D - 65 2 • 65 76,1 176 • 261 D - 50 2 • 50 60,3 136 • 211 1500 D - 80 2 • 80 88,9 196 • 292 D - 65 2 • 65 76,1 176 • 261 1500 D - 100 2 • 100 114,3 238 • 367 D - 80 2 • 80 88,9 196 • 292 1500 D - 125 2 • 125 139,7 267 • 418 D - 100 2 • 100 114,3 238 • 367 1500 D - 150 2 • 150 168,3 298 • 475 D - 125 2 • 125 139,7 267 • 418 1500

Medium pipe at least to measure standard AGFW-guideline FW 401. From wall thickness > 3,2 mm with weld seam preparation by 30° bevelled ends acc. to DIN 2559 T 1, class 22 respectively ISO 6761. Length of bare steel pipe ends 200 mm ± 20 mm, ridge-height like pipe bars. As medium pipe reducer generally an eccentric piece of steel acc. to DIN 2616 T2 with welded pipe socket will be used. For improvements and in order to follow the actual technical development we will reserve modifications of measures and as well technical modifications of the values mentioned in the table. In order to avoid unacceptable high frontal soil-pressure loads, the reducing piece has to be padded in. Expansion pads are not part of the delivery range of the reducing piece. ATTENTION: A reduction will be possible about only one dimension, due to the different ridge-

heights of the steel pipes. In order to reach more dimension steps, the corresponding number of reducing pieces has to be installed in series.

Material specification jacket-pipe see Design Manual, page R 4.0 Material specification PUR-hard foam see Design Manual, page Z 8.0



COMPONENTS

Bifurcated Pipe - Type I

Top View

Front View

Dimensions Steel Pipe Dimensions Single Pipe

Outside- ∅

Jacket-Pipe- Dimension resp.

overall height Jacket- Pipe-∅

Axes-height

Axes-distance

Overall- length


/ Dimension in Type

DN Inches da

in mm b • h

in mm Da

in mm H

in mm A

in mm BL2

in mm BL1

in mm D - 25 2 • 25 1“ 33,7 99 • 144 90 53,7 230 600 1100 D - 32 2 • 32 1¼“ 42,4 131 • 184 110 62,4 271 600 1100 D - 40 2 • 40 1½“ 48,3 131 • 184 110 68,3 271 600 1100 D - 50 2 • 50 2“ 60,3 136 • 211 125 85,3 280 600 1100 D - 65 2 • 65 2½“ 76,1 176 • 261 140 101,1 308 600 1200 D - 80 2 • 80 3“ 88,9 196 • 292 160 118,9 328 600 1200 D - 100 2 • 100 4“ 114,3 238 • 367 200 144,3 369 600 1200 D - 125 2 • 125 5“ 139,7 267 • 418 225 174,7 395 600 1200 D - 150 2 • 150 6“ 168,3 298 • 475 250 213,3 424 650 1300

Bifurcated pipes are used for transitions from two single pipes to the double pipe. Medium pipe at least to measure standard AGFW-guideline FW 401. From wall thickness > 3,2 mm with weld seam preparation by 30° bevelled ends acc. to DIN 2559 T 1, class 22 resp. ISO 6761. Length of bare steel pipe ends 200 mm ± 20 mm, ridge-height like pipe bars. For improvements and in order to follow the actual technical development we will reserve modifications of measures as well as technical modifications of the values mentioned in the table. ATTENTION: Orders for bifurcated pipes should clearly indicate all medium and jacket-pipe

diameters. During assembling the correct position of single- and double pipes resp. the installation position of the bifurcated pipe as well as the manufacturing-technical determined axis-measures A and H has to be considered.

There must be the possibility of expansion compensation at the transition before the bifurcated pipe (Z- or U-elbow), because bifurcated pipes should be assembled generally at pipe-static neutral line-positions. This will be also valid in case of a system-change in an exit of a single pipe-branch. Due to manufacturing-technical reasons the single pipes will be generally insulated in standard insulation. Project work information bifurcated pipe see page D 10.6 Material specification jacket-pipe see Design Manual, page R 4.0 Material specification PUR-hard foam see Design Manual, page Z 8.0



COMPONENTS

D 3.6.1

Bifurcated Pipe - Type II

Top View

Front View

Dimensions Steel Pipe Dimensions Single Pipe

Dia-meter

Outside- ∅

Jacket-Pipe- Dimension resp.

overall height Jacket- Pipe-∅

Axes-height

Axes-distance

End-distance

Overall- length

Overall- length

Type in

DN da

in mm b • h

in mm Da

in mm H

in mm A

in mm x

in mm BL2

in mm BL1

in mm D - 25 2 • 25 33,7 99 • 144 90 53,7 240 125 500 900 D - 32 2 • 32 42,4 131 • 184 110 62,4 260 125 500 900 D - 40 2 • 40 48,3 131 • 184 110 68,3 260 125 550 900 D - 50 2 • 50 60,3 136 • 211 125 85,3 275 125 550 900 D - 65 2 • 65 76,1 176 • 261 140 101,1 340 125 550 950 D - 80 2 • 80 88,9 196 • 292 160 118,9 360 125 550 1000 D - 100 2 • 100 114,3 238 • 367 200 144,3 400 125 600 1050 D - 125 2 • 125 139,7 267 • 418 225 174,7 425 225 600 1200 D - 150 2 • 150 168,3 298 • 475 250 213,3 450 225 600 1200

Bifurcated pipes are used for transitions from two single pipes to the double pipe. Medium pipe at least to measure standard AGFW-guidelines FW 401. From wall thickness > 3,2 mm with weld seam preparation by 30° bevelled ends acc. to DIN 2559 T 1, class 22 resp. ISO 6761. Length of bare steel pipe ends 200 mm ± 20 mm, ridge-height like pipe bars. For improvements and in order to follow the actual technical development we will reserve modifications of measures as well as technical modifications of the values mentioned in the table. ATTENTION: Orders for bifurcated pipes should clearly indicate all medium and jacket-pipe

diameters. During assembling the correct position of single- and double pipes resp. the installation position of the bifurcated pipe as well as the manufacturing-technical determined axis-measures A and H has to be considered.

There must be the possibility of expansion compensation at the transition before the bifurcated pipe (Z- or U-elbow), because bifurcated pipes should be assembled generally at pipe-static neutral line-positions. This will be also valid in case of a system-change in an exit of a single pipe-branch. Due to manufacturing-technical reasons the single pipes will be generally insulated in standard insulation. Project work information bifurcated pipe see page D 10.6 Material specification jacket-pipe see Design Manual, page R 4.0 Material specification PUR-hard foam see Design Manual, page Z 8.0



CONNECTION COUPLERS

D 4.0

General The jacket-pipe dimensions of isoplus-double pipes are corresponding to circular pipes concerning its circumference. Therefore the oval prefabricated uncross-linked shrinkable coupler as well as the cross-linked isojoint II® shrinkable coupler will be exclusively available for the increased technical requirements of a coupler construction concerning isoplus-double-pipes. Both are suitable for getting non-positive, gas- and watertight jacket pipe connections. The pipe layer will be responsible for putting over the couplers as well as the corresponding sleeves before the welding work. The isojoint II® has to be formed manually in order to reach an oval shape.

Couplers Couplers Double pipe Type

Jacket-Pipe- Dimension b • h in mm

∅ Da in mm

Length L in mm

Double pipe Type

Jacket-Pipe-Dimension b • h in mm

∅ Da in mm

Length L in mm

D - 25 99 • 144 125 700 D - 80 196 • 292 250 700 D - 32 / 40 131 • 184 160 700 D - 100 238 • 367 315 700

D - 50 136 • 211 180 700 D - 125 267 • 418 355 700 D - 65 176 • 261 225 700 D - 150 298 • 475 400 700

Preparation of assembling couplers (PE-longitudinally welded) will be not possible with cross-linked isojoint II®; this has to be considered at pipe assembling. Insulation and sealing of all connection couplers will be made exclusively by isoplus-factory educated assembling specialists, approved by AGFW-/BFW. All coupler connections made by isoplus will be marked with an index. This will allow a detailed identification of the assembler and will also increase the demand of quality. Sleeves The shrinkable sleeves which are belonging to the uncross-linked shrinkable couplers and which can be activated manually consist of a heat shrinkable molecular cross-linked and modified Polyolefin with a sealing adhesive system made of an elastic-viscous sealing area. This kind of sleeve is resistant against thermal-ageing, weather conditions and chemical influence as well as against UV-rays and alkaline earth. It is part of the delivery range of isojoint II® - shrinkable coupler, but only for isoplus-double pipe applications. Coupler Test Procedure In co-operation with accepted test institutes, like i.e. FFI in Hanover (District Heating Research Institute e.V.) isoplus offers extensive analysis of PUR-local foam and sleeves respectively of complete couplers. The test procedures include all quality guidelines of EN 253 and EN 489 standard. A detailed summary you will find in the Design Manual, chapter V, “Connection-Technology Jacket-Pipe”. All taken samples will be recorded with the relevant parameters like date, time project and-section, constructing company and installer, weather conditions, temperature, dimension, kind of coupler and -number, local foam (mechanical or manual) and trench conditions, and transferred to the corresponding test institute. After writing of the certificate it will be given to the buyer for documentation. In case of additional questions concerning testing of couplers please contact isoplus-quality engineering specialists.



CONNECTION COUPLERS

D 4.1

UUUnnncccrrrooossssss---LLLiiinnnkkkeeeddd Shrinkable Coupler as Connection-, Reduction- and End Coupler The uncross-linked, PE-weldable shrinkable coupler consists of an one-piece PEHD-socket pipe with heat shrinkable properties, two shrinkable sleeves for sealing the coupler at both transitions to the jacket pipe, as well as of two PE-welding plugs and PE-hole lockers each. Between jacket- and socket pipe a sealing tape made of Butyl-rubber will insert before shrinking procedure, in order to reach a high circular strength during shrinking and sealing. The second sealing by using shrinkable sleeves will follow after the foaming procedure. Suitable for all pipe networks with increased operating- and soil-conditions like ground- and pressing water, see Design Manual, chapter V “Connection-Technology Jacket-Pipe“. Shrinkable connecting coupler: Suitable for elliptical double pipe shape, preformed and according to EN 489, approved with 100 cycles sand box sliding test. Reduction-shrinkable coupler: Due to the different ridge-height of the steel pipes, reductions can be made only about one dimension. The required eccentrical steel pipe reductions acc. to DIN 2616 T 2 are part of the pipe manufacturer’s performance. In order to reach more dimension reductions, the reducers have to be located in a distance of a pipe bar at the corresponding sequential branches. Shrinkable-end coupler: These are used as temporary closing of pipe ends which are closed with torospherical head and are dead ending in the soil. Pipe caps respectively torospherical heads acc. to DIN 2617 are part of the pipe manufacturer’s performance. Reduction- and end coupler: The front sides have to be padded generally, in order to avoid not admissible high earth-pressure loads. The expansion pads are not part of the delivery range of couplers.

isojoint II® - Shrinkable Coupler The cross-linked, not weldable, self sealing isojoint II®-shrinkable coupler consists of a one-piece thick-walled Polyethylene with heat shrinkable properties as well as of two PE-plugs each and PE-hole lockers. Between jacket- and socket-pipe an extra wide sealing tape made of Butyl-rubber will be inserting before shrinking procedure in order to reach a very high circular strength during shrinking. After foaming the shrink-sleeves will be installed in order to increase the lateral pressure at the isoplus-double pipe. The isojoint II®, available as connection coupler, is suitable for increased operating- and soil- conditions like ground- and pressing water. Approved according to EN 489 in sand box sliding test with 1000 cycles, see Design Manual, chapter V “Connection-Technology Jacket-Pipe”



ACCESSORIES

D 5.0

One-Time-Ball-Valve

One-time-ball-valves respectively required-connection-ball-valves are used for closing of a construction section which will be continued later on. As end piece in closed position, clockwise as well as in longitudinal axis misaligned, the existing line may be continued at any time. Emptying and putting out of service of the pipeline is not necessary. Post insulation will be made by use of an end coupler. Available dimensions and detailed technical description see Design Manual, chapter accessories, page Z 4.0.

End Cap

In construction buildings or houses heat shrinkable end caps are used for frontal protection of the PUR-foam against moisture. In case of use in manholes the end caps have to be protected against flooding with heated water. An EPDM-filling-block for bridging the steel pipe ridge is part of the delivery range. This part will be pressed into the ridge-gap before assembling. End caps consist of a molecular cross-linked, modified and unmeltable Polyolefin. End caps will protect additionally against diffusion of PUR-cell-gases which will occur at the open pipe ends. The pipe layer will be responsible fur putting on the end caps before the connection to the construction line. The caps have to be protected against combustion, may not be cut open and are not suitable for retro-installation. Fixing into a wall without end cap (EK) is not permitted. Available types and assembling information see Design Manual, chapter accessories and assembling guidelines, page Z 5.0 and M 7.0.



ACCESSORIES

D 5.1

Wall Duct

Sealing rings are used in order to avoid water penetration at wall ducts in buildings and manholes. The wall ducts allow axial expansion compensation up to maximum 10 mm and have to be installed rectangular to the wall. Radial loads due to soil settlement at buildings or at entry of manholes and lateral movements will lead to leakage. However this can be avoided by careful compressing of the soil at the entry area.

Inside of the buildings an excess [A] of the PEHD-jacket-pipe of at least 125 mm has to be considered. Detailed technical description and assembling information see Design Manual, chapter accessories, page Z 6.0 respectively chapter assembling guidelines, page M 8.0.

Sealing Ring - Standard

A standard sealing ring (DR) consists of a special shaped, ageing resistant and circular neoprene rubber ring and is suitable for sealing against not damming and pressing water acc. to DIN 18195-4. The diameter coordination of the sealing ring is corresponding to those of the connection couplers, see page D 4.0. Press-Sealing - FP

In case of pressing and damming water acc. to DIN 18195-6 a gas- and pressing-watertight press-sealing has to be used which can be adjusted from inside. This consists of two stainless steel pressure discs as well as of a double sealed black sealing area, shore hardness = 50 ± 5 ShA.

Installation will be made by in a circular core drilling [K] or a pipe-liner (FR) The drilling respectively the concrete work will be made by a construction company. The length of the pipe-liner is depending from the wall thickness. The pressure discs and the sealing area are separated, this will also guarantee a post-installation of the press-sealing.

Core drilling [K] resp. inside-Ø FR Material-Specification resp. -Properties

Double pipe Type

Jacket-Pipe b • h in mm

Diameter K in mm

Pressure-discs

Bolts 8 piece

Nuts 8 piece

Sealing area

D - 25 99 • 144 200 3 mm M 8 x 60 M 8 40 mm D - 32 / 40 131 • 184 250 3 mm M 8 x 60 M 8 40 mm

D - 50 136 • 211 300 3 mm M 8 x 60 M 8 40 mm D - 65 176 • 261 350 4 mm M 8 x 60 M 8 40 mm D - 80 196 • 292 350 4 mm M 8 x 60 M 8 40 mm D - 100 238 • 367 450 5 mm M 10 x 70 M 10 50 mm D - 125 267 • 418 500 5 mm M 10 x 70 M 10 50 mm D - 150 298 • 475 550 5 mm

V 2

A (1

.430

1)

M 10 x 70

V 2

A (1

.430

1)

M 10

V 4

A (1

.457

1)

50 mm

PU

R-E

last

omer

e



ACCESSORIES

D 5.2

Expansion Pads

Expansion pads (DP) are used for compensation of movements of isoplus-double pipe at all pipeline points like i.e. L-, Z- and U-elbows or at branches. The pipe-layer is responsible for keeping the increased minimum distances between the jacket-pipes and the trench walls, within the DP-areas. Only then a correct DP-assembling according to the pipe-static requirements will be guaranteed. As standard DP of 40 mm thickness and a length of 1000 mm will be produced. In case that thickness of > 40 mm will be required, two or more pads have to be glued over each other by flaming up. Assembling will be made exclusively by isoplus-factory educated and approved installers.

For isoplus-double pipe the DP-standard as well as therefore recommended type of “DP-part-covering” will be available. Dimensions, properties and technical description as well as application see Design Manual, chapter accessories, page Z 7.0.

Pad sizes for double pipes:

Expansion Pads Expansion Pads Double pipe Type


Width in mm

Size of stripes

Double pipe Type


Width in mm

Size of stripes

D - 25 99 • 144 120 I D - 80 196 • 292 240 II D - 32 / 40 131 • 184 240 II D - 100 238 • 367 360 III

D - 50 136 • 211 240 II D - 125 267 • 418 360 III D - 65 176 • 261 240 II D - 150 298 • 475 480 IV (II+II)

PUR - Foam

For the insulation and sealing works at site isoplus-installers are using manual mixed bucket-foam for the connection couplers, which will be mixed by use of turbo-mixer or mechanical foam, which will be taken from mobile units, preheated containers, proportionate as per request. Detailed description and technical requirements acc. to EN253, see Design Manual, page Z 8.0.

Manual Foam Quantity in Litres for double pipe couplers at 440 mm not insulated steel length:

Double pipe D - 25 D - 32 D - 40 D - 50 D - 65 D - 80 D - 100 D - 125 D - 150 Steel pipe-∅ in mm 2 • 33,7 2 • 42,4 2 • 48,3 2 • 60,3 2 • 76,1 2 • 88,9 2 • 114,3 2 • 139,7 2 • 168,3Jacket-Pipe [b • h] 99 • 144 131 • 184 131 • 184 136 • 211 176 • 261 196 • 292 238 • 367 267 • 418 298 • 475Foam, bright 0,203 0,328 0,316 0,381 0,525 0,648 1,045 1,200 1,485 Foam, dark 0,281 0,453 0,437 0,526 0,725 0,895 1,442 1,657 2,050 Foam, total 0,484 0,781 0,753 0,907 1,250 1,543 2,487 2,857 3,535

During winter time the total amount of foam has to be multiplied by factor 1,3.



ACCESSORIES

D 5.3

Assembling Supports

Pipe supports are used as auxiliary support for isoplus-double pipes. In contrary to the squared beams, the pipe supports have not to be removed. They consist of extruded foam free of any flour-hydrocarbon. Six points of supports resp. 6 blocks are required for a 12,00 m pipeline.

For the main support spots and special supports have to be used which will fix the double pipes in their position. The assembling supports are produced in correspondence to dimension respectively to the jacket-pipe dimension of the isoplus-double pipe.

As intermediate support + + + conventional pipe supports with measure of 100 • 100 • 600 mm may be used. See also Design Manual, chapter accessories, page Z 9.0.

Warning Tape

Warning tape will be used for marking of isoplus-double pipes above the finished sand-bed and the first filling-layer of 200 mm in 12:00 o’clock position. The warning tape will be delivered in coils of 250 m length and a breadth of 40 mm, with black inscription on yellow background “Attention District Heating Pipeline”.

Special Support

Distance

Standard Support



TRANSPORT / UNLOADING

D 6.0

The described assembling information on page D 6.0 to D 8.4 will be only a survey concerning the necessary working steps and -conditions. The also considerable, more detailed and valid regulations and information are mentioned in Design Manual, chapter M „Assembly guidelines”. Transport

FOTO vorhanden

FOTO vorhanden

isoplus-Double pipes and components as well as accessories will be delivered by truck to building site respectively to the material stock. Transportation roads should be suitable for trucks with 12 m loading area.

In order to protect the medium pipe, the pipe ends are closed with yellow caps. These protection caps should be removed first before connection of the pipes.

In case that transportation of the pipes will be continued, the loading area of the truck has to be checked concerning any rigid, protuberant parts. Consider that the pipes will be loaded even and in longitudinal direction.

All couplers as well as all kind of accessories will be delivered in protection foils or/and in cardboard-boxes. Also the cardboards may not be removed or damaged before direct assembling.

Check completeness of delivery at receipt of the material and record it. Any kind of defects or damages has to be mentioned clearly on the delivery papers.

Unloading

Unloading of the truck should be made appropriate and material-gentle by pipe-layer or by a third party. Throwing down of material is not permitted.

In case of 12 m pipe bars the unloading will be made by a crane which has to be provided. For that two 10-15 cm wide textile-belts with at least 4 m long load-girder has to be used. This will avoid an unacceptable bending of the pipes.

Pulling and rolling on the ground as well as the use of steel ropes or chains is not admissible. Unevenness of the ground will cause scrapes and pressure marks.



STORAGE

D 6.1

The pipe bars have to be stored dimensional on even, stone-free and try areas. Avoid groundwater-dangerous and water retaining soils. Sand banks or 10-15 cm wide squared timber can be placed as supports in a distance of 2,00 m. For safety reasons the pile-height should be limited to max. 2,50 m. The arrangement of the piles will be made with laying double pipes in squared form. The pipe bars have to be secured against side-slipping by use of pegs respectively supports. Suitable protection measures against all kind of weather conditions have to be provided in case of storage for a longer period. During a period of frost the jacket-pipe has to be protected against inexpert handling like bending, shock- and strikes. Accessories and incidental like coupler, shrinkable sleeves, end caps etc. have also to be stored dry, frost-free and protected from direct sun-irradiation. PUR-foam has and the already mentioned accessories should be stored in a closable room or container at temperatures of +15° and +25° C. The PUR-local foam-container may be opened first before direct use. The PUR-foam will crystallise below of 0° C. Frozen respectively crystallised foam will be excluded from using for post insulation. The purchaser respectively the pipe-layer will be responsible for the correct storage of all double pipe components. He has also to confirm the completeness as well as the supervising of the material output during the construction period. Required material for post insulation has to be handed over to isoplus-personnel directly before execution.



UNDERGROUND WORK

D 7.0

General Soil works have to be carried out according to the general valid guidelines and standards for civil engineering. Furthermore the communal different regulations have to be considered. See Design Manual, chapter assembling, page M 2.0 to M 2.5 for more detailed information concerning civil engineering.

Trench Depth The depth of soil [T] of the pipe trench will be calculated from the given covering height [ÜH], the PEHD-jacket-pipe construction height [h] and the height of the pipe support respectively sand-bed.

Double pipe D - 25 D - 32/40 D - 50 D - 65 D - 80 D - 100 D - 125 D - 150 h in mm 144 184 211 261 292 367 418 475

Soil-depth T in mm 844 884 911 961 992 1067 1118 1175

h = Construction height of PEHD-jacket-pipe

The values mentioned in the table are valid for a minimum covering height of 0,60 m and a assembling support of 0,10 m. In case of another covering height the difference-value to ÜH = 0,60 m has to be added or to subtract from the depth [T]. Trench Width

The soil-width [B] will be calculated from PEHD-jacket-pipe width [b] and the minimum assembling [M], depending from dimension.

Double pipe D - 25 D - 32/40 D - 50 D - 65 D - 80 D - 100 D - 125 D - 150 b in mm 99 131 136 176 196 238 267 298

Minimum M in mm 150 150 150 200 200 200 200 200

Soil-width B in mm 399 431 436 576 596 638 667 698

b = Construction width PEHD-jacket-pipe

Due to the minimum values a sufficient assembling-width for post insulation at the connection couplers as well as for preparing the sand-bed will be guaranteed. In case that expansion pads will be required at branches or at direction-changes, the soil-width [B] has to be enlarged about 80 mm at a padding thickness of 40 mm as well as about 160 mm at a padding thickness of 80 mm. The values of the table are valid for an isoplus-double pipe. In case that more pipes [x] will be laid, the soil-width [B] will be calculated according to the following formulary: B = x • b + (x+1) • M [m] (80) b = Jacket-pipe width or -diameter



UNDERGROUND WORK

D 7.1

Sand-Bed After finishing of all sealing- and insulation works as well as assembling of the expansion pads, all kind of tests which are belonging to the performance range, have to be carried out. Before the sand-bed will be prepared, the line has to be released by a responsible chief engineer. The following points should be especially considered: ⇒ The covering heights based on the static design has been considered ⇒ The pipeline guidance is corresponding with the isoplus-trench-design ⇒ Expansion pads are assembled in the specified length and thickness and

are secured against soil-pressure ⇒ All couplers are foamed and recorded, the ducts to the buildings are closed ⇒ A functional test of the monitoring system has been carried out and the results

have been recorded. ⇒ At thermal prestressing the specified expansion movements and the corresponding

temperature has been reached and recorded

Thereafter the isoplus-double pipes have to be re-filled carefully in layers from all sides and compressed generally manual with a rough sand of at least 10 cm round-edged, not cohesive medium- to rough sand with grain size of 0 - 4 mm (class NS 0/2). During these works eventual used supports have to be removed. The exact sand-quality, sieve-line as well as more detailed information are mentioned in Design Manual, chapter assembling, page M 2.3.1.

Re-Filling

After completion of the sand-bed the trench may be filled with excavation material. Compression in layers will be necessary. After a filling layer of 20 cm, compressing machines i.e. a 100 kg explosion-compressing-ram can be used. The „additional technical contract conditions and guidelines for digging and soil-works for road construction“, ZTV A and ZTV E, have to be considered additionally. The required compressing data [DPr], are mentioned in Design Manual, chapter assembling instructions, page M 2.4.



UNDERGROUND WORK

D 7.2

Minimum Covering Height

Bridge Class SLW 60 acc. to DIN 1072

(Heavy-load traffic) Contact breadth of the wheel 60 cm

100 kN Wheel load 10,19 to

Load-area radius 30 cm Resulting load-area 2.827,43 cm²

35,37 N/cm² Calculated pressure [p] of load-area 3,61 kg/cm²

33,30 kN/m²

The influence of traffic load on the isoplus-double pipe will increase in correspondence with the reducing of the covering height. Therefore the minimum covering height in accordance to the diameters have been investigated and defined. Mathematical only poor results could be determined.

Nevertheless a minimum covering height of 0,60 m has to be considered for all isoplus-double pipes, due to danger of beaming up , buckling, spade-safety, sucking in of vehicles in case of not stable surfaces, as well as of possible exceeding circular bending loads.

Resulting equivalent surface load 3,39 to/m²

Maximum Covering Height

Soil load resp. -pressure on the isoplus-double pipes will increase in correspondence with the increasing of the covering height. Due to admissible shearing- resp. transverse strain [τPUR] between PEHD-jacket-pipe and PUR-hard foam resp. medium pipe and foam the covering height [ÜH] has to be limited, independent from operating temperature and the medium.

Double pipe D - 25 D - 32 D - 40 D - 50 D - 65 D - 80 D - 100 D - 125 D - 150 b in mm 99 131 131 136 176 196 238 267 298 h in mm 144 184 184 211 261 292 367 418 475

ÜH maximum in m 2,45 2,35 2,65 3,10 3,05 3,15 3,25 3,50 3,65

ATTENTION: The values mentioned in the table are valid for soils with a specific weight of 19 kN/m³ and an inside angle of friction [ϕ] of 32,5°. Outside of expansion pad areas respectively expansion angles, according to AGFW FW 401, part 10 and EN 253, admissible shearing strain τPUR = ≤ 0,04 N/mm². Load Distributing Plate

Civil engineering safety measures have to be provided, in case of underflowing the minimum covering height respectively exceeding of the maximum covering height. These measures should guarantee to secure the isoplus-double pipes against a not admissible over load of the crown pressure, of maximum 20 N/cm² respectively 2 kg/cm².

Distributing plates are used for distributing of high point- respectively traffic loads in case of too low covering heights. Intercepting plates will be suitable for distributing of high area loads (traffic- and soil loads) in case of exceeding the maximum covering heights.

Both kinds have to be at least 100 cm longer than the area of the double pipe line which has to be protected. Determination of the exact thickness, reinforcement and eventual required foundations has to be calculated by a construction-static-engineer. Detailed information see Design Manual, chapter assembling, page M 2.5.2. An approval from isoplus-design engineers will be required, before execution.



PIPE CONSTRUCTION

D 8.0

Assembling Laying of isoplus-double pipes will be carried out on pipe supports located in distances of 2,00 m, see also page D 5.3. In order to guarantee a correct assembling of couplers, the first support has to be placed at least 1,00 m from the pipe end, respectively from the welding seams. In case that squared timber will be used as temporary support, these have to be removed strictly before sand filling. This will avoid not admissible pressure loads on the PEHD-jacket-pipe. Sand sacks have to be slitted before re-filling.

Essential hindrances of the pipe guidance have to be considered during the construction period, due to foreign pipelines. Therefore the position of such hindrances has to be determined before beginning of construction the works, by checking estate layouts and sectional drawings together with the responsible authorities. The result has to be determined in written. The required minimum distances according to AGFW have to be strictly considered. See Design Manual, chapter assembling, page M 3.0. Connection Technology & Weld-Seam-Test Before welding of isoplus-double pipes and components, the connection couplers together with the shrinkable sleeves have to be put over the jacket-pipe beside of the welding spot. The circular couplers should be pressed manual and carefully into an oval form, without of any damage. During the welding procedure the frontal areas of the pipe ends should be protected against combustion by use of wet shawls or by push plugs. The connection of black steel pipes up to DN 80 can be welded autogenously, however should preferable- and from DN 100 generally welded electrical. After finishing of the welding works the welding seams have to be tested in an extent as agreed between customer and supplier. Obvious faults are classified in ISO 6520. The total pipe line, eventual in sections has to be tested by water pressure test. The test pressure should be last for at least eight hours. This test has to be carried out with an over-pressure of 1,3 of the operating pressure, max. 32,5 bar, however at least with the nominal pressure of the pipe lines. The pressure tests have to be carried out according to Vd TÜV 1051 or DVGW-working regulation 469, test procedure B1 as well as DIN 4279. Tightness test of the seams by air with an over-pressure of 0,2 bar would be useful before the pressure test. Leakages can be reliable recognised by soaping the welding seams. At least 10 % of the seams have to be checked respectively recorded according to EN 1435 and evaluated according to EN 25817, in case that a radiographic test has been agreed.



PIPE CONSTRUCTION

D 8.1

Fitting Pieces Due to individual pipeline guidance it will be necessary to produce shorter fitting pieces made of delivered 12 m double pipes. Due to this any pipe line length can be realized. However it should be strictly considered that the isoplus-double pipe may not be cut at the areas of the ridges as well as 50 cm before and thereafter. These factory produced ridges of the steel pipes will influence the pipe-static essential, because pipe-static fields of maximum 6 m lengths will be reached due to their location. The following working steps will be necessary for the production of a fitting piece: The length of the fitting piece will be measured at a pipe bar and marked. At the left and the right from this mark the 2 • 200 mm wide respectively long area of dismantling will be marked.

Cut the PEHD-jacket at the marks and connect both oval cuts with a diagonal cut. ATTENTION: At temperatures of < 10° C the jacket pipe has to be heated before cutting, due to danger of cracks. ATTENTION: The alarm wires of the monitoring system may not be cut when the diagonal cuts will be made. Thereafter the jacket-pipe has to be lift off by use of a suitable tool, i.e. mortise chisel.

The PUR-foam has to be removed by use of a hammer and a mortise chisel. Thereafter the alarm wires will be cut central. Remaining foam on the steel pipe has to be removed by use of an emery linen. Finally the steel- respectively medium pipe has to be cut at the middle of the dismantling area.



PIPE CONSTRUCTION

D 8.2

Z-Leaps These leaps will be assembled with two preinsulated elbows, normally 90°, and a fitting piece. The fitting piece [P1] should be at least 1,50 m long in order to slip over the connection couplers. In case that the pipe static allows a lateral angle [A] of 2,00 m, two elbows 1,0 • 1,0 m should be welded directly together. The angles of 1,0 m will be sufficient for slipping over the couplers.

U-Elbow with Fitting Piece The lengths of fitting pieces [P1] are depending from static requirements. The working radius [A] can be seen from isoplus-trench-design. The three fitting pieces [P1] should be at least 1,5 m long. This will allow slipping over the couplers before assembling the U-elbow.

U-Elbow without Fitting Piece From statically point of view normally a working radius [A] of 2,00 m will be sufficient. In case of using 4 elbows 1,0 • 1,0 m no fitting-piece will be necessary. The angles of 1,0 m will be sufficient for slipping over the couplers.

House-Connection-Elbow, vertical Elbows with 1,0 • 1,0 m angle have to be used as house-connection-elbow at buildings without cellar. This solution will guarantee that no coupler connection will be in the foundation- and in the area of the sole plate. Other length on request.



PIPE CONSTRUCTION

D 8.3

Height-Leaps Height-leaps for which elbows 90° or 45° will be assembled in vertical (s) construction, the installing position of the elbows respectively the position of the primary and secondary line should especially considered. Also the required minimum height for putting on the couplers has to be meet. This means that due to assembling-technical reasons a minimum height- or a minimum length of the hypotenuse [y] of 2,0 m will be required in case of 45°- leaps. As additional condition the length has to be in accordance with the statical calculation.

Swan-Neck, twisted For swan-necks also 90°- or 45° elbows will be used. Special consideration should be given to the position of primary and secondary line. Eventually a detailed drawing has to be established. In order to allow to put on the coupler, generally a minimum height of 2,0 m has to be considered. Independent from this a statically demonstration has to be established.

Top View resp. Ground Plan Side View

Top View resp. Ground Plan (shown staggered) Side View



PIPE CONSTRUCTION

D 8.4

Shut-Off-Valve

Shut-off-valves will be welded into the line like a straight piece of pipe. The welding works have to be carried out in passage-position that means with open ball, in order to avoid a damage of the sealings. Installation within the area of angles of L-, Z- or U-elbows will be not admissible because of occurring bending tensions.

The PEHD-protection pipe which is part of the delivery range will be cut in correspondence with the covering height and will end in a manhole-ring or surface box.

In order to avoid not admissible high frontal soil pressure loads, due to the axial expansion movements, expansion pads have to be installed generally at the transitions of the PEHD-jacket-pipe and at the PEHD-attachable protection pipes. The required 3 m respectively 6 pieces of expansion pads are not part of the delivery range of a shut-off valve.

Please consider enough freedom of motion because occurring of axial expansion. The prolongation will be put on vertical on the conical square of the valve-dome.

If the assembling will be finished, the first closing procedure should be carried out after flushing the line, in order to remove solid particles which may cause sealing-damages. The shut-off-valves are closing in right-hand clockwise up to a 90° stop, the opening will be carried out contrary. The stops may be not over winded by force. Opening and closing has to be carried out slowly in order to avoid pressure-shocks at the pipe system.

In between- respectively regulation positions have to be avoided because of possible sealing-damages. Using of anti-type torque-duplicators as well as the prolongation of T-keys is not allowed and will lead to an exclusion of warranty.

The assembling of shut-off valves will be analogous valid also for venting tees, see also chapter assembling, page M 3.5.1.



LEAK DETECTING

D 9.0

General Small leakage or moistures may lead to essential damages. The result could be heat-loss, corrosion and interruptions of pipeline operation. Therefore isoplus offers exclusively the Nordic IPS-Cu®-System for the isoplus-double pipe. With this leak-detecting and monitoring system a detecting of the complete pipeline concerning pipeline damages and moistures will be possible, by using of several detecting units, suitable for the corresponding purpose. The monitoring includes not only the area of the connection couplers, but also the total pipeline, respectively every meter of the line.

Already slight moisture of the PUR-hard foam due to leaking weld-seams or construction moisture, also at high-impedance level will be indicated. Also damages of PEHD-jacket-pipes i.e. by civil works- or planting works as well as in case of wire break will lead to a fault-indication. Within the coupler connections and T-branches no sensible fully-or half active electronical components will be used, which may lead to an early wearing of the alarm system. The measuring equipment with the electronical components is placed inside of buildings, manholes or in corresponding station-distributors. The special characteristics of IPS-Cu® are the both not insulated copper wires. The complete surface of both wires will be used for a fault-indication of the total pipeline. This will be an essential advantage for an early recognition in case of a tendency change. The IPS-Cu®-System is the optimum solution in order to fulfil the requirements of an efficient leak detecting of pipelines, due to a permanent development of the equipment, which will guarantee an early, safe and simple recognition as well as location. Two bare copper wires with an uniform profile of 1,5 mm² will be factory foamed into the pipes and all fittings. For optical differentiation one wire is galvanised. Because of this any confusion will be excluded during wire connection. Required wire connections within the connection couplers will be made by squeeze-husks and additional soldering with soft-solder. The wire distance-holders are fixing the wire-position within the coupler area. At the end points of the pipeline both wires are short-circuit, in order to form a measure-loop. All branch lines as well as line extensions, may be integrated into the leak detecting system later on, at any time and without any problems. The detecting unit will be installed at the starting point of the measure-loop, i.e. at the heating station. Due to the standardised course of the detecting wires and because the layout of the required hardware-components is included in the isoplus-trench drawings, an additional wire-connection drawing will be not necessary. All can be seen by one look, and the complicated comparison between pipeline and wire course, as well as double recording will belong to the past.



LEAK DETECTING

D 9.1

Function IPS-Cu® The IPS-Cu® monitoring is made by ohm resistance-measurement between the pair of wires and the electrical conducting medium pipe. Because the insulation of PUR-foam represents an electrical insulator, this will result in a high insulation resistance between wire and medium pipe. Additionally a wire-loop measurement for self-monitoring will be carried out. A detecting of recognised faults will be made by use of impulse-reflectometry, therefore the wire-loop will be not necessary in this case. This technology of impulse- reflectometry is using the high frequency-electrical properties of pipelines.

Due to the geometrical location of the bare- foamed in Cu-wires and the medium pipe as well as the electrical properties of PUR-hard foam, a wave-resistance will occur which is constant over the total length. Electrical impulses of low energy are spreading undisturbed, similar like light velocity.

In case of moisture, which has not to be electrical conducting, the wave-resistance will change in the PUR-foam insulation. The impulse-spread will be disturbed and a reflection of the impulse (echo) will occur at this area. The interference will be calculated from the running time between transmitted impulse and reflection.

For this purpose isoplus offers a digital monitoring hardware IPS-Digital®. The advantage is the impulse-input via the sample-and-hold-procedure. The wire system will be scanned in regular periods (sample) and the signals will be temporary stored (hold). To a certain time eventual returning reflections will be recorded. Due to the change of the recording time, it will be possible to investigate certain pipeline sections in detail concerning echo (reflections). With a total number of 6000 impulses IPS-Digital® will reach with IPS-Cu® a definition of at least 0,5 m, the detecting exactness will be 0,2 %. In case of high frequency-interference the number of impulses will be increased. Also in this case it will be possible to carry out measurements without restrictions, by adding filters and parallel middle-value calculations. Also multiple faults of a measure-section can be clearly detected and located. Detailed information and technical descriptions of the available unit-structure as well as the accessories are mentioned in the Design Manual, chapter leak detecting.



LEAK DETECTING

D 9.2

Appliance Technical IPS-Cu® Decades of experience with IPS-Cu® has led to a manufacturer spreading and compatible Nordic-wire system. This standard and the high degree of spreading allows an economic useful production and installation. Due to a simple construction and a consequent development the most effective safety could be reached. The architecture of IPS-Cu® impresses already by a high fault-redundancy. Monitoring Units

The group of monitoring units, consisting of the mobile manual system tester IPS-HST, the stationary unit IPS-ST 3000 and the combination of this two, the all round unit IPS-MSG, are suitable for small and medium pipeline-networks.

These three units are offering an automatically monitoring and can be technically used in comparable systems. The automatical stationary unit IPS-ST 3000 can be additionally used for hierarchic constructed pipeline-detecting systems. IPS-Digital® - Monitoring Leak Detecting Units

The IPS-Digital® - System is representing the optimum and complete solution for fully automatically location with permanent monitoring. For medium and bigger respectively intensively branched pipeline networks, IPS-Digital® is offering a central leak-detecting management. Due to the fact that you may decide free from any restrictions concerning specific wire properties, IPS-Digital® creates a sole and decisive safety concerning the central data acquisition and evaluation of different sensor-wire-systems.

Two central measuring data stations IPS-Digital-MDS, the IPS-Digital--MS belonging to it, as well as several enlarging and adaptation modules will be available as unit-components. The mobile station IPS-Digital-MBS will be suitable for manual monitoring and location in not structured networks as well for application at building site.

This complete measuring system with its unique flexibility is completed in a stable suitcase. The handling of the mobile station IPS-Digital-MBS is very simple. Due to an integrated accumulator the mobile unit may be used at any time, independent from the electrical network. Via the integrated note-book and the installed control-software IPS-Digital-SSW the guidance of all manual or automatical practicable measures will be made. Detailed information and technical description of the available unit-structure as well as of the available accessories are included in the Design Manual, chapter leak detecting.



PROJECT WORK

D 10.0

General

The isoplus-double pipe requires special knowledge, due to the special pipe-geometry. Concerning economical, ecological and technical aspects it offers essential advantages. In order to benefit from this, a detailed knowledge of the functional characteristics of the isoplus-double pipe will be necessary.

The here mentioned basic data should be a guideline for the project-engineers. However the data will of course not cover all kind of project situations. For that the isoplus-project-engineers will be at your disposal to solve any individual problems. Double Pipe - Compound System

The two medium pipes and the oval PEHD-jacket-pipe are non-positive connected with the PUR-foam and are forming a unit (compound system). The steel pipes which are laying upon another are welded together with two steel-ridges within a 12 m pipe bar. These special characteristics are the essential differences of the isoplus-double pipe compared to conventional single pipes, which have to be considered already at the projecting work and especially during assembling.

The pipe laying will be carried out directly on the soil. Therefore the technical guidelines acc. to AGFW FW 401 for preinsulated jacket-pipes will be relevant. Contrary to other pipe systems, the three components medium pipe, PUR-foam and PEHD-jacket-pipe will expand axially at thermal load only concerning the effective average temperature between primary and secondary pipeline.

Therefore a sufficient dimensioning of the steel - connection-ridges will be absolutely necessary. Concerning this purpose the system has been approved independent by engineering company Röse, before Rumpel & Röse. The ridges are dimensioned for temperature differences up to 70 K which is i.e. corresponding to a spread of 130 to 60° C.

Double pipe D - 25 D - 32 D - 40 D - 50 D - 65 D - 80 D - 100 D - 125 D - 150 b in mm 99 131 131 136 176 196 238 267 298 h in mm 144 184 184 211 261 292 367 418 475 hs in mm 20 20 20 25 25 30 30 35 45 bs in mm 6 6 6 6 6 6 6 6 10 Ls in mm 55 70 80 100 130 160 200 250 300



PROJECT WORK

D 10.1

Static

Due to variations of temperature every medium will change its volume. For the isoplus-double pipe the axial expansion will be essential. All external occurring forces from soil- and traffic loads as well as friction forces resulting from expansion will be transmitted directly to the medium pipes, due to the compound construction. The static has to collect the occurring tensions under consideration of relevant safety factors, in order that the limiting values of the material components will not be reached respectively exceeded, and that the change of the double pipe length will be compensated.

The admissible maximum permanent operation- respectively primary temperature [TB] of the isoplus-double pipe is 130 ° C, and the maximum admissible operating pressure [p] 25 bar. In accordance to AGFW FW 401 the following static parameter has to be meet:

Axial tension of steel pipe [σa] ≤ 190 N/mm² Transversal tension straight pipe [τ] ≤ 0,04 N/mm²

Axial shearing strength [τax] at 23° C ≥ 0,12 N/mm² [τax] at 130° C ≥ 0,08 N/mm² Tangential shearing str. [τtan] at 23° C ≥ 0,20 N/mm² [τtan] at 130° C ≤ 0,13 N/mm²

Natural Expansion Components L-, Z- and U-Elbows

This kind of pipe laying technology will be used whenever the guidance of the pipeline is given by local obstacles like buildings, road crossings, trees etc. Condition for that will be that the admissible pipe laying length [Lmax] will be meet. This will depend from several parameter, like described in Design Manual, chapter project work, page P 2.2. In case of double pipe Lmax will be influenced essentially by the ridge-connections respectively the temperature difference between primary and secondary line, i.e. TVL = 90° C, TRL = 70° C, spread = 20 K.

Corresponding to the covering height [ÜH] and spread [K] the maximum admissible laying length, mentioned in the table D 10.1.1, will be relevant for isoplus-double pipe. Because a part from the usable load capacity will be considered for the ridges, Lmax will be shorter compared to the admissible laying length of single pipes. In case that the total pipeline section should be longer than Lmax, the total pipeline section has to be split into several sections ≤ Lmax by using Z- or U-elbows, or the pipeline will be thermal pre-stressed, see page D 10.3.



PROJECT WORK

D 10.1.1

Admissible Laying Length Lmax in m

Spread = 70 K Spread = 60 K Covering height [ÜH] in m Covering height [ÜH] in m

Double pipe Type 0,60 0,80 1,00 1,20 1,40 1,60 0,60 0,80 1,00 1,20 1,40 1,60 D - 25 83 64 53 45 39 34 94 73 60 51 44 39 D - 32 80 63 51 43 38 33 91 71 58 49 43 38 D - 40 90 70 58 49 43 38 102 80 66 56 48 43 D - 50 104 82 67 57 50 44 118 93 77 65 57 50 D - 65 100 79 66 56 49 43 114 90 75 64 56 49 D - 80 102 81 67 58 50 45 115 92 77 65 57 51 D - 100 115 93 78 67 59 52 131 105 88 76 67 59 D - 125 119 97 82 70 62 55 136 110 93 80 70 63 D - 150 133 109 93 80 71 63 151 124 105 91 80 72


Double pipe Type 0,60 0,80 1,00 1,20 1,40 1,60 0,60 0,80 1,00 1,20 1,40 1,60 D - 25 105 82 67 56 49 43 116 90 74 62 54 47 D - 32 101 79 65 55 48 42 112 87 72 61 53 47 D - 40 114 89 73 62 54 48 126 98 81 69 60 53 D - 50 132 103 85 72 63 56 146 114 94 80 70 62 D - 65 127 100 83 71 62 55 140 111 92 78 68 61 D - 80 129 102 85 73 64 57 142 113 94 81 70 63 D - 100 146 117 98 84 74 66 161 130 109 93 82 73 D - 125 151 123 103 89 78 70 167 135 114 98 87 77 D - 150 169 138 117 101 90 80 186 153 129 112 99 89


Double pipe Type 0,60 0,80 1,00 1,20 1,40 1,60 0,60 0,80 1,00 1,20 1,40 1,60 D - 25 127 98 80 68 59 52 138 107 87 74 64 56 D - 32 122 95 78 66 58 51 133 104 85 72 62 55 D - 40 137 107 88 75 65 57 149 117 96 81 70 62 D - 50 159 125 103 87 76 67 172 135 111 95 82 73 D - 65 153 121 100 86 75 66 166 131 109 93 81 72 D - 80 155 124 103 88 77 68 168 134 111 95 83 74 D - 100 176 142 119 102 89 80 191 154 129 111 97 86 D - 125 182 148 124 107 95 84 197 160 135 117 102 91 D - 150 203 167 141 122 108 97 221 181 153 133 117

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