Comprehensive Features Comparison between different kinds of pipe
Item
Cast Iron
Stainlesssteel(Seamless)ANSI/ASME 36.19M
Plastic Line Steel（PE Lined）Teflon Lined
Steel
Rubber Lined
Steel
GRP
ISO10467/ISO10639/ISO25780/EN1796/EN14364/
Steel mesh reinforced HDPE Pipe
StandardsIS1536:2001Reference steel pipe standardCJ-123-2004/CJ-124-2004
ManufacturingCast Iron pipeStainlesss steel pipeLined steel pipeGrass fiber reinforced pipe
New kind of high density polyethylenepipe which is reinforced by a steelwire mesh skeleton.The
manufacturing process is use spotwelding crossing steel wire to make ita net-cylinder structure as reinforcingpart and continuously extrude HDPEas the stuffing material to thisstructure on producing line at thesame time, just like reinforcedconcrete structure.
Comprehensive
features
Mainly be usedfor water supplyand drainage
Super high pressureresistance and super hightemp. resistance, goodcorrosision resistance, but
cost high
8
Stronger strength, light weight, inner
Super corrosionStronger strength, light weight,
and outter layer is anti-corrosion,Super corrosionSuper abrasive
resistance, bettercorrosion resistance, no scar,
abrasion resistance, installation easy,resistance and smoothresistance and better
solution for highbut installation difficult, highly
inner surface is smooth, save energysurface, super highsolution for abrasive
temp.stronglyrequirements for connection
and save cost, longer service time,pressure resistancemedium
corrosive mediumand repaire is not easy.
more than 30 years.
≥6
inner surface issmooth, flowingresistance is low
≥6
inner surface issmooth, flowingresistance is low
≥6
1.6——2.5
3.5——4
The abolute roughness coefficient is0.01mm, improve flowing capacity
30% higher than steel pipe
Weight ProportionInner surface（Flow
Capacity&EnergyConsume）ChemicalcorrosionresistanceWeatherresistanceConnection
≥6inner surface isnot smooth andeasily scaling
inner surface is smooth,flowing resistance is low
40% Inner surface is very
Flowing resistance is
smooth and friction coefficient
high
is 40% lower than steel.
Not suitable forAcidic andAlkalini solutions
Good for Alkalinity, but notgood for high concentrateAcid, super oxidationresistance and good fororganic-chemical material
Better
Socket, flange, sleeve,
ThreadedThermal coefficient 25W/m.
℃
-40—450℃
Good for Acidity andalkalinity, but withtemp. limitation
Good for Alkalinity,
Depends on resion matrix and
but not good for
fiber reinforcement material,
high concentrateDepends on rubber
good for Acidity and alkalinity,
Acid, and organic-material
but not good for organic
chemical material
chemical material
also
Acceptable
Acceptable
Better
Butt joint and wraped,glue, Socket, flange, ThreadedThermal coefficient 0.36W/m.
℃-40—100℃
Low pressure class pipe ≤2.0Middle pressure class ≤2.0—
5.5High pressure class pipe ≥ 5.5
Max pressure is 20
Good for Alkalinity, but not good forhigh concentrate Acid, and good for
organic-chemical material
WeakSocket, Flange,
Sleeve,ThreadedThermalcoefficient20W/m. ℃-10—100℃
AcceptableBetter
Electro-fusion connection & Flange
connectionThermal coefficient 0.43W/m. ℃
-20—70℃
Flange, ThreadedFlange, ThreadedFlange
Heat PreservationWorking Temp
According the lined layer thickness
-25—65℃
-200—200℃
-25—85℃
Working Pressure,
Mpa
≤2.5≤201—3.5-0.1—6.4-1—3.5≤4
Impact resistanceLengths AvailableLinear Expansion
Coefficient(20~100℃)Tensile Yieldingstrength (Mpa)
Weak5,6 mtr/pcs
Acceptable12m/pcs(Max)
AcceptableAcceptable3m/pcs
AcceptableGood6,12m/pcs
Good
6,8,10,12 mtr/pcs (Max)
11.2×10-6/K98~276,accordingdifferent type
9~9.5×10-6/K
/
9~15x10-6/K35.4-35.9x10-6/K
According different Grade/100~30022~23
Crack possibility
Sectional crack caused by chemical corrosion,fatigue corrosion. Oxide coating layer easily beLined layer easily seperated from steel cause the different heat
expansion coefficient
The connection jointThe connection joint
Repair
Small crack can be welded, it will need cut andreplace a new piece of pipe for big crack
Replace a new piece of pipe
Manually resin painting and
glass fiber wrapping
Small crack can be welded by heater,it will need cut and replace a new
piece of pipe for big crack
@ 20
Service Life (In
Years)
51010151515-20
comparison between different pipes
