Comparisons Between Grp Pipes With Various Metallic by Nadeem

N A D E E M A H M E D Mobile : +91- 99 44 329 322

E-mail : [email protected]

Prepared by : N a d e e m A h m e d Mobile : + 91 - 99 44 329 322


GRP PIPE COMPARISION OF FEATURE BENEFITS WITH

VARIOUS TRADITIONAL PIPES

FIT & FORGET PIPING SYSTEM

LIGHTWEIGHT, STRONG & DURABLE





COMPARISONS BETWEEN GRP PIPES WITH VARIOUS METALLIC , PSC , PVC, HDPE & OTHER PIPES

MATERIAL

PARAMETERS GRP CAST IRON DUCTILE IRON MILD STEEL PSC PCCP BWSC

TENSILE STRENGTH

(MPA)

High Hoop

tensile

strength

150-260 Min.420 Min.410 Less Hoop tensile

strength 410 410

ELONGATION % - Nil 10 17 - - -

BRINELL HARDNESS - < 230 BHN < 230 BHN < 140 BHN - - -

TYPE Very light

weight,

Flexible

This is heavy, rigid

& brittle pipe.

The pipe ductile,

lighter flexible in

nature.

This is also a light,

flexible type pipe.

High weight, Rigid

pipe

High weight,

Rigid pipe

High Weight, semi-

rigid pipe

STRENGTH High strength to

weight Ratio

High strength, very

low impact

resistance

High strength and

very high impact

resistance

High strength and high

impact resistance

Subject to shear &

beam breakage

Subject to

shear

& beam

breakage

Subject to shear &

beam breakage

CORROSION Highly

Corrosion

resistant

Corrosion resistant Corrosion resistant Highly corrosion

prone.

Highly corrosion

prone

Highly

corrosion

prone

Highly corrosion

prone

CEMENT MORTAR

LINING Not applicable Not available

centrifugally

applied cement

mortar lining

Cement mortar lining

is available at site

level

Lining & coating Lining &

coating CML applicable

LAYING & JOINTING

TYPE &

INSTALLATION

Long laying

length

(6-18m), double

bell coupling,

Faster

installation

Long laying, Flexible

rubber push-on type

joints and rigid lead,

slow installation

Long Laying,

Flexible rubber-

push- on type joints

(Gasket type), fast

installation

Long Laying, Rigid

welded joints, Fast

installation

Wide range of laying

length, flexible

Rubber ring (Gasket

type), slow

installation

Wide range of

laying length,

welding, slow

installation

Medium laying

length

(4-8m), welding,

slow installation





MATERIAL

PARAMETERS GRP CAST IRON DUCTILE IRON MILD STEEL PSC PCCP BWSC

EFFECTIVE SERVICE

LIFE & DURABILITY 50-60 Years Minimum 100 years Minimum 100 years

30 to 40 years under

proper anticorrosive

lining

Max.30 Years under

proper Maintenance

Max. 30 Years

under proper

Maintenance

Max.30 Years under

proper Maintenance

BASIC COST OF PIPE Cost effective Costliest Costlier Costly Cheaper Cheap Relatively less Costly

TRANSPORTATION

COST Less Higher High High Higher Higher High

ROUGHNESS

COEFFICIENT 0.011 0.011 with CML 0.011 with CML 0.011 with CML 0.011 with CML

0.011 with

CML 0.011 with CML

HW-“C”- VALUE 150 140 with CML 140 with CML 120 with CML 140 140 130

HANDLING Easier Easy Easier Easy Difficult Difficult Easy

DEFLECTION About 5o 3o-5o 3o-5o NIL negligible Negligible Nil

SURGE PRESSURE Low hydraulic

surge High hydraulic surge

Medium hydraulic

surge

Medium hydraulic


High hydraulic


AVAILABLE SIZES IN

INDIA (MM) 25-4000 100-1000 100-1100 300-2500 300-2000 300-2000 250-1800

STANDARDS IS-12709 IS-1536 IS-8329 IS-3589 IS-784 IS-784/EN-642 IS-15155





COMPARISONS OF FEATURES BENEFITS BETWEEN GRP PIPE WITH D.I. PIPES

MATERIAL

PARAMETERS GRP PIPE DUCTILE IRON PIPE

CORROSION RESISTANCE Excellent corrosion resistance. No external/

Internal coating or wrapping is required.

Very poor corrosion resistance. Hence wrapping,

coating, Cathodic protection is required to prevent

COST 15% Lower than Ductile Iron -

INSTALLATION COST Light duty tools are required due to light

weight. Hence substantial cost saving on

Heavy duty tools, Fork lift, crane required due to

heavy weight. Hence installation cost will be

MAINTENANCE Less maintenance is required Periodical maintenance is required.

LIFE GRP pipes are designed for 50 Year of life. Due to corrosion the life of the pipe is 10 – 15

UNDERGROUND APPLICATION GRP pipe is not attacked by the organic

matters present in the soil

The life of the under ground DI pipe is reduced

due to the organic matters present in the soil

PROCESS PARAMETER FOR

MANUFACTURING

Varies from case to case and hence

properties can be fixed depend upon the Only one type for all applications

WEIGHT Very light. Nearly 1/4th of DI pipe Heavy

HANDLING Handling is very easy since very light in Difficult, due to heavy weight

SPECIFIC GRAVITY 1.8 – 1.9 7.05

HAZEN WILLIAMS COEFFICIENT 150 (Hence less head loss) 120

WALL THICKNESS Lesser wall thickness due to proper fiber

orientation

For a particular pressure rating, wall thickness is

higher than GRP





COMPARISONS OF FEATURES BENEFITS BETWEEN GRP PIPE WITH MILD STEEL PIPES

MATERIAL

PARAMETERS GRP PIPE MS PIPE

CORROSION RESISTANCE Totally corrosion resistant. No external/ internal coating or

wrapping is required.

Corrosion is the Major problem with MS pipes. To minimize

corrosion additional epoxy coating is required. Cathodic

protection is required

HAZEN WILLIAMS

COEFFICIENT

(“C” VALUE)

150 C Value

Highest among different piping materials due to smooth

inner surface of GRP Pipes Higher C value gives lower head

loss and reduces the pumping cost.

120 C Value

LIFE GRP pipes are designed for 50 Years of life. Due to corrosion the life of the pipe is 10 – 15 years


WEIGHT Very light. Nearly 1/4th of MS pipe for the same

specification. Very Heavy

HANDLING Handling is very easy since very light in weight Difficult, due to heavy weight

MAINTENANCE Practically no maintenance is required for GRP

pipes.

External coating may peel off in due course of time due to

rough handling and environment. Periodical maintenance is

required.

UNDERGROUND

APPLICATION

GRP pipe is not attacked by the organic matters present in

the soil

The life of the underground pipe is reduced due to the

organic matters present in the soil

INSTALLATION COST Light duty tools are required due to lightweight.

Hence substantial cost saving on installation.

Heavy-duty tools, Forklift, Crane etc. are required

due to heavy weight. Hence installation cost will

be higher





COMPARISONS OF FEATURES BENEFITS BETWEEN GRP PIPE WITH PVC PIPES

MATERIAL

PARAMETERS GRP PIPE PVC PIPE

TENSILE STRENGTH Hoop tensile strength: 300 - 375 MPa 50 MPa

MODULUS OF ELASTICITY Hoop Tensile modulus: 20000-30000 GPa 3000 GPa

SPECIFIC GRAVITY 1.8 – 1.9 1.4 – 1.45

WALL THICKNESS

Lesser wall thickness due to high strength

and excellent stiffness and proper fiber

orientation


much higher than GRP

CORROSION RESISTANCE Good Poor against alkali medium

RELATIVE COST 15% cost saving higher diameter pipes

(above 10 inches) -


MANUFACTURING

Varies from case to case and hence

properties can be fixed depend upon the

application by varying fiber orientation.

Only one type for all applications

MAINTENANCE GRP pipes are designed for 50 Year of life

hence no maintenance is required Periodical maintenance is required.

LIFE GRP pipe are designed for 50years of life Life of PVC pipe is 5 – 8 years depending

upon the service condition

UNDERGROUND PIPING

APPLICATIONS

Best design optimization possible between

meeting internal pressure class and stiffness

requirement with fiber orientation and sand

aggregate addition

Not suitable for Underground application





COMPARISONS OF FEATURES BENEFITS BETWEEN GRP PIPE WITH HDPE PIPES

MATERIAL

PARAMETERS GRP PIPE HDPE PIPE

TENSILE STRENGTH Hoop tensile strength: 300 - 375 MPa 60 MPa

MODULUS OF ELASTICITY Hoop Tensile modulus: 20000-30000 GPa 5000 GPa


WALL THICKNESS Lesser wall thickness due to high strength and

excellent stiffness and proper fiber orientation


much higher than GRP

CORROSION RESISTANCE Good Good

RELATIVE COST 15% cost saving higher diameter pipes

(above 200mm) -


MANUFACTURING

Varies from case to case and hence properties

can be fixed depend upon the application by

varying fiber orientation.

Only one type for all applications

MAINTENANCE GRP pipes are designed for 50 Year of life

hence no maintenance is required Periodical maintenance is required.

UNDERGROUND PIPING

APPLICATIONS

Best design optimization possible between

meeting internal pressure class and stiffness

requirement with fiber orientation and sand

aggregate addition

Uneconomical design calling for very high

thickness.





COMPARISONS OF FEATURES BENEFITS BETWEEN GRP PIPE WITH D.I. /M.S / PVC / HDPE PIPES

MATERIAL

PARAMETERS GRP PIPES DI PIPES MS EPOXY COATED PVC PIPES HDPE PIPES

CORROSION

RESISTANCE Very Good

Very poor corrosion resistance.

Hence inside cement lining is

required. For outside corrosion

protection wrapping, coating,

Cathodic protection is required

To avoid inside corrosion,

additional epoxy coating is

required. For outside

corrosion protection

wrapping, coating, Cathodic

protection is required

Poor against alkali

medium Good

MAINTENANCE Very Less Maintenance is

required

External coating may peel off in

due course of time due to rough

handling and environment

Periodical maintenance is

required.

External coating may peel off

in due course of time due to

rough handling and

environment Periodical

maintenance is required.

Repair is not possible Repair is not

possible

LIFE GRP pipes are designed

for 50 Years of life

Due to corrosion the life of pipe

is 15 – 20 years

Due to corrosion the life of the

pipe is 10 – 15 years

Life of PVC pipe is

5 – 8 years depend

upon the service

condition

Life of HDPE pipe is

5 – 6 years depend

upon the service

condition

UNDERGROUND

APPLICATION

Best design optimization

possible between

meeting internal

pressure class and

stiffness requirement

with fiber orientation

and sand aggregate

addition

The life of the underground DI

pipe is reduced due to external

corrosion

The life of the underground

pipe is reduced due to

external corrosion

Not suitable for

Underground

application

Uneconomical

design calling for

very high thickness.





VARIOUS PIPE WALL – SPECIFIC GRAVITY





COEFFICIENT OF THERMAL EXPANSION





THERMAL CONDUCTIVITY





SURGE & WATER HAMMER – SURGE WAVE CELERITY





SAVE LIFE COSTS - SAVING TIME & MONEY





REAL TIME DATA – LIFE COST OF GRP PIPE VS MILD STEEL PIPE

DESCRIPTION

DN 1400 MM DN 1400 MM DN 1300 MM DN 1200 MM

MILD STEEL PIPE GRP PIPE GRP PIPE GRP PIPE

HEAD MTR 105 60 82 115

PUMP KW 3,156 1,803 2,464 3,456

PIPE COST RS CR 18.75 15.68 13.75 12.10

PUMP COST RS CR 0.27 0.15 0.21 0.29

INSTALL COST CR 16.02 10.83 9.96 8.39

COMPARISION 100% 81% 87% 101%

POWER COST 2.03 1.16 1.59 2.22

ANNUITY

Af= 0.106 AT 10% FOR 30 YEARS 19.17 10.94 14.95 20.97

PROJECT COST 33.19 26.77 28.91 20.97

COMPARISON 100% 81% 87% 101%





GRP PIPE DEFULT PROPERTIES & ADVANTAGE

GRP PIPE PROPERTIES ADVANTAGES

Absolute resistance to corrosion by carbon dioxide

and water

� Sweet-gas corrosion (CO2)

� Sour-gas corrosion (H2S)

� Oxygen corrosion (O2)

� Mixed corrosion

� Very long useful service life

� Reduced costs

� Reduced environmental risks

� Internal and external surfaces free from

� corrosion/deposits/wax

� No protective liners or encasements required

� Cost savings

� No cathodic corrosion protection required

Low self-weight (approx. 50% lighter than steel)

� Reduced installation costs

� Light and easy to handle

� Reduced personnel and material requirements

� Simple, quick installation

Smooth internal pipe surface,

� Hazen Williams C=150

� Low surface roughness values

� Internal liner surface roughness 23um

� Improved flow rates and speeds

� Increased pump efficiency or fewer pumps needed

� Avoidance of incrustation on inner pipe surfaces

� Improved hydraulic values

� Minimum pressure losses





GRP PIPE USAGE IN DIFFERENT APPLICATION FIELDS

� Water Distribution (civil and industrial)

� Sewer Systems (urban and industrial)

� Irrigation Networks

� Water Intakes for Cooling Water Systems

� Waste Water Outfalls to sea

� Sub-sea Pipelines

� Process Lines for Industrial plants

� Fire Fighting Networks

� Corrosive Fluids and Vent Gas Stacks

� Wells Casing, Wells Pump Risers and Screen

� Penstocks & Hydro power plant

� Pipes for Ships and Offshore applications

� Water supply lines

� Waste water treatment system

� Seawater outfalls & Transport of corrosive fluids

� Desulphurisation systems & Desalination plants , Industrial sewage

� Cooling water system & District cooling projects and Etc.





MECHANICAL PROPERTIES OF GRP PIPE WITH STEEL PIPE

MATERIAL

PARAMETERS GRP PIPE STEEL PIPES

FLEXURAL STRENGTH PSI (MPA) 55,000 (379) ***

FLEXURAL MODULUS PSI (GPA) 42,500,000 (29) ***

TENSILE STRENGTH PSI (MPA) 50,000 (343) 60,000 (414)

TENSILE MODULUS PSI (GPA) 4,250,000 (29) 30,000,000 (207)

DENSITY (KG/M³) 0.06 (1.7) 0.28 (7.8)²

THERMAL CONDUCTIVITY BTU IN/FT² HOUR ˚F (W/M˚ K) 0.277 (0.04)³ 348 (50.2)³

SPECIFIC GRAVITY& STRENGTH OF MATERIALS

MATERIAL

PARAMETERS GRP PIPE STEEL PIPES CAST IRON PIPE PVC PIPE

SPECIFIC GRAVITY ( 1 ) 1 .8 - 2.1 7.84 7.34 1 .4

TENSILE STRENGTH ( MPA) 160 - 320 380 187 50 - 60

SPECIFIC STRENGTH 100 - 168 48.5 25.5 36.8





THE SOLUTION TO CORROSION PROBLEMS IS GRP PIPE !

FACE CORROSION PROBLEM IF YOU USE OTHER THEN GRP PIPE – LIKE BELOW

Corrosion is a natural redox process that oxidizes metals to their oxides

and sulfides. In chemical terms, corrosion is the reverse of isolating a

metal from its oxide or sulfide ore; in electrochemical terms, the

process shares many similarities with voltaic cells. Damage from

corrosion to cars, ship, buildings, and bridges runs into tens of billions

of rupees annually, so it is a major problem in much of the world.





ADVANTAGES OF GRP PIPE

� Long life 50 yearr design life

� Low maintenance costs (none)

� Lowest lifecycle costs

� No coatings or linings to maintain

� No need for cathodic protection

� No need for chemical soil analysis

� Unaffected by salt water

� Unaffected by chlorides & sulphates

� Unaffected by stray currents

� Unaffected by soft water

� Corrosion Proof throughout









ONLY FIT AND FORGET PIPING SYSTEM- GRP PIPE

THANK YOU.......NADEEM AHMED

Date post:	27-Oct-2014
Category:	Documents
Upload:	nadeem-ahmed
View:	393 times
Download:	4 times

Comparisons Between Grp Pipes With Various Metallic by Nadeem

Documents