14
1
Good manufacturing and quality controlling system can assure to make perfect products
2
Centrifugal casting machine with
water- cool ing metal mould.
High quality molten iron with its low content of sulphur, phosphorus and other trace elements, together with the Delavaud Process of the world advanced level, combines to produce perfect quality iron pipes.
3
The annealing furnace of
horizontal type performs the
treatment ductile cast iron pipes
75 meter long with 45 meters
effective wo rking length and
equipped with computerized
control system up from siemens
in Germany. The furnace is up
to now the most advance in the
w o r l d t e c h n o l o g i c a l l y .
No leakage will be appeared on the socket and
spigot when tested under specified pressure.
4
During finishing processes, the pipes will pass through visual
Inspection, Zinc spraying (if necessary), Roundness checking,
internal grinding of spigot and socket, hydraulic pressure testing (or
air test), Ring test chamfering, grinding, dimension checking and
mechanical properties test etc, in order to assure the quality of pipes.
5
After the precise quality inspecting, Ductile Cast Iron Pipes possess
reliable strength, correct dimensions, uniform wall thickness, smoothly
surface of inside and outside.
6
Chemical components Ductile iron pipe Steel pipe Grey cast iron pipe
Carbon 3.5-4.0 0.1-0.2 3.2-3.8
Silicon 1.9-2.6 0.15-0.4 1.4 -2.2
Manganese 0.15-0.45 0.3-0.6 0.4 -0.6
Phosphorus <=0.06 0.02-0.03 <=0.3
Sulfur <=0.02 0.02-0.03 <=0.1
Chem
ical com
position
Magnesium 0.03-0.06 - -
3460 Vacuum Spectrometre is used to examine
and test the chemical components of the molten
iron before and after its nodularization.
Large metal graphic microscope is used to test the
nodularization state and organics of the products
Micro structure
7
Mechanical property test
Corrosion resistance to potable water
Mechanical Properties
Volume corroded (gr / cm2) Kind of pipe
After 45 days After 90 days
Ductile iron pipe 0.0060 0.0090
Grey cast iron pipe 0.0060 0.0103
Seamless steel pipe 0.0170 0.0273
Sprial-weided steel
pipe 0.0294 0.0396
Ductile iron pipe
(Annealed)
Ductile iron pipe
(not Annealed) Grey cast iron pipe Steel pipe
Tensile strength (N/
mm2) >=420 150-260 >=400
DN60-1000>=10 Elogation (%)
Dn1100-2600>=7 3-5 Neglect >=18
Hardness (HB) <=230 <=210 Approx. 140
<=DN300 5.0
DN350-600 4.0
DN700-1000 3.2
DN1100-2000 2.5
Hydraulic test (MPa)
DN2100-2200 1.8
2.5-3.0
Air test (MPa) >=0.3
Ring test
8
The cement mortar lining machines.
Grinding Cement Lining
COATINGS AND LININGS
IN ACCORDANCE WITH ISO 2531 / BS 4472 / BS EN 545 / BS EN 598
STANDARD COATING AND LINING
Outside - Bitumen Coating
- Zinc Coating
- Epoxy
Inside - Bitumen Lining
- Cement Mortar Lining
- High Alumina Cement Lining
Bituminous Coating
9
PIPES WITH TYTON SOCKET JOINTS, K9 & K12
Mass of length L, including mass of socket Nominal
DN DE e
Approx. mass
of pipe barrel 4.0 m 5.0 m 5.5 m 6.0 m 8.0 m
mm mm kg/m kg kg kg kg kg
80 98 6.0 12.2 52 64.5 70.5 76.5 -
100 118 6.1 15.1 64.5 80.0 87 95 -
150 170 6.3 22.8 98.5 121 131 144 -
200 222 6.4 30.6 133 163 177 194 -
250 274 6.8 40.2 175 215 234 255 -
300 326 7.2 50.8 222 273 297 323 -
350 378 7.7 63.2 277 340 368 403 -
400 429 8.1 75.5 331 407 441 482 -
450 480 8.6 89.9 389 479 524 569 -
500 532 9.0 104.3 460 564 610 669 -
600 635 9.9 137.1 608 745 806 882 -
700 738 10.8 173.9 775 949 1012 1123 -
800 842 11.7 215.2 963 1179 1247 1394 -
900 945 12.6 260.2 1171 1431 0 1694 2164
1000 1048 13.5 309.3 1399 1708 - 2017 2594
1100 1152 14.4 362.8 - - - - 3054
1200 1255 15.3 420.1 - - - - 3551
1400 1462 17.1 547.2 - - - - 4657
1600 1668 18.9 690.6 - - - - 5898
Remark: Non-standard length & size may be supplied by the manufacturer. All dimension please refer to manufacturer drawing. Bolted Gland Joints (Mechanical) & Flanged Joints are available upon request.
10
Tyton Joint Fitting
90o Bend 45o Bend 22½o Bend
11¼o Bend 90o Socket Duckfoot Bend
Tee Branch Tee 45o Angle Branch
Socket Collar Concentric Tape Remark: Non-standard length & size may be supplied by the manufacturer.
All dimension please refer to manufacturer drawing.
11
Flange Joint Fitting
90o Bend 45o Bend 22½o Bend
11¼o Bend 90o Flanged Ductfoot Bend 90o Bend Long Radius Tee & Reducing Tee Invert Tee Radial Tee
Crosses 450 Angle Branches Y Pipe
Remark: Non-standard length & size may be supplied by the manufacturer. All dimension please refer to manufacturer drawing.
12
Flange Blank Flange Tyton Socket Piece
Spigot Piece Spigot Pieces with Screwed-on
or Welded-on Flanges
90o Long Radius Bend Having
Cleaning Hole and Cover
Remark: Non-standard length & size may be supplied by the manufacturer.
All dimension please refer to manufacturer drawing.
13
Concentric Taper Eccentric Taper
Mechanical Flexible Joint Flange Spigot with Cast
Collars with Bolt Gland K12 on Puddle Flange
Bellmouth
Remark: Non-standard length & size may be supplied by the manufacturer.
All dimension please refer to manufacturer drawing.
