Basic Info.Model NO.DN20-4000MMMaterialFRP Frv GRP Grv
FiberglassHardnessHard TubeTypeThermosetting Plastic
PipeColorCustomized or Natural
ColourHollowHollowShapeRoundUsageDrainpipe, Water Supply Pipe,
Threading Pipe, Wire and Cable Pipe, Agricultural Irrigation Pipe,
Hydroelectric Power Plant Sea Water DesanlinationStandardAwwa,
ASTM, GB, DIN, JISDesign Temperature-40-2000 DegreeStiffness2500,
5000, 7500, 10000, 20000,or RequiredLength3-12mMolding
MethodFilamentwinding or Hand Lay upTrademarkZHONGYITransport
PackageSeaworthy or
CustomizedSpecificationPN0.1-2.5MpaOriginChinaHS
Code39172900Product Description High Strength Corrosion Resistance
Fiberglass FRP PipeZhongyi FRP Pipes are highly suitable for the
intake and outlet pipelines in desalination plants. Thanks to the
production process, the highly corrosion resistant products can be
adapted to match various requirements - large diameters and low
pressure for pipes in outside areas or small diameter and high
pressure for indoor pipes - and safely transport saltwater and
brine for many decades."FRP is the material of choice for medium-
to large-size plants, while smaller plants tend to use high-density
polyethylene [HDPE]." FRP is more cost-effective than HDPE in the
larger-diameter pipes generally used in the biggest
plants. FRP materials and processes can be tailored to meet
specific mechanical property requirements and have the additional
advantages of corrosion and chemical resistance, flexibility and
the capacity to withstand mild shock.FRP pipes are, primarily,
filament wound glass/polyester. For aboveground applications,
helical filament winding on a fixed-length mandrel is most popular
because it can be tailored to achieve the desired hoop-to-axial
strength ratio by customizing the angle of wind, making it ideal
for restrained joining. For pipes destined for burial
underground, continuous filament-wound pipe is generally used
because it can be produced in a greater variety of lengths and
diameters. Often it is also more price competitive and
lends itself better to the use of unrestrained joints, such as
mechanical seal couplings. FRP joints and fittings are
generally made by hand layup, although some flanges and fittings
are filament wound, depending on the cost advantages.FRP also is
commonly used to construct storage tanks and piping used in
desalination plants for sodium hypochlorite (NaOCl), often used in
chlorination of desalination process water, and for sulfuric acid,
which can be very difficult to store in metal but can readily be
handled in fiberglass/epoxy vinyl ester tanks and piping at ambient
temperatures and concentrations below 50 percent.There is a little
FRP pipe in the undersea portion of intake and discharge systems,
however. Typically seawater is pumped up from seabed intake
equipment through concrete tunnels, often lined with polyvinyl
chloride (PVC) or other plastic to decrease friction and discourage
attachment of crustaceans.Typically seawater is pumped up from
seabed intake equipment through concrete tunnels, often lined with
polyvinyl chloride (PVC) or other plastic to decrease friction and
discourage attachment of crustaceans. FRP is not used for the
high-pressure piping that forces seawater at pressures up to 1,200
psi/82.47 bar through the RO separation process, mostly because
composite joints and couplings associated with such high-pressure
systems are considered impractical. The pressure pipework is
almost always superduplex or superaustenitic stainless steel or,
sometimes, titanium. Corrosion is a real problem for steel in
this environment due to galvanic attack commonly found in seawater
and brackish water environments, but composites made with epoxy
vinyl ester resins such as Ashland's Derakane 411 or Hetron 922, or
isophthalic resins, perform admirably in desal piping
application.Typical Dimensions:DNL0.6MPa1.0MPa1.6MPa( mm )( mm )TH
( mm )TH ( mm )TH ( mm
)1018004.64.64.61518004.64.64.62018004.64.64.62518004.64.64.63218004.64.64.64060004.64.64.65060004.64.64.66560004.64.64.68060004.64.64.610060004.64.64.612560004.64.64.615060004.64.64.6200120004.65
. 95.1250120004.85 .
95.7300120004.956.4350120004.95.17.5400120004.95.88.2450120005.36.28.9500120005.46.710600120006.37.611.3700120006.79.113.1800120007.21014.6900120008.210.916.41000120009.111.817.712001200010131914001200011.314.621.515001200012.215.62316001200013.116.624.51800120001418.527.220001200015.820.529.821001200017.62131.122001200019.52232.424001200020.52435.526001200022.726.5383000120002832.544.2320012000313647.53600120003339.552.440001200034.545.357.8 Engineering
Mechanics Index of FRP/Composite Material (1)1,Pipe Hoop
tensile strength200~300MPaLongitudinal tensile
strength50~100MPaLongitudinal flexural strength140MPaInterlaminar
shear strength50MPaCrosslaminar shear strength60MPaHoop modulus of
elasticity25GPaLongitudinal modulus of elasticity12.5GPaShear
modulus of elasticity7GPaflexural
E--modulus9.3GPa2,Fitting Tensile strength120-290MPaFlexura
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