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| GRP pipe can be fabricated in various ways. The following is GGT standard for the fabrication of GRP pipes.
Filament wound method is generally used to produce GRP pipe. Merit of GRP Pipe The FRP is a widely proved composite material with high strength
and corrosion resistance. | | |
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| - Corrosion Resistance
-Both the inner and outer surfaces of the FRP pipe are corrosion
resistant, eliminating the need for a lining process. - Strength to Weight Ratio
-The specific strength of the FRP pipe exceeds that of steel and
stainless steel - Light Weight
-Fluidity in the FRP pipe is excellent because of small resistance
and coefficient of friction (C=150), reducing the pumping cost.
The inner surface is rarely worn by any possible sands or
gravel. - Size Variety
-The FRP pipe is available from 15 mm to 2.5 m in diameter.
The standard lengths supplied are 6, 9, and 12m. - Low Thermal Conductivity
-The FRP pipe has low thermal conductivity, saving the cost of heat
insulation.
- Low Thermal Expansion
-The FRP pipe has low thermal expansion, lowering deformation and
the number of expansion joints required. - FDA Compliance
-The FRP is made of the certificated materials from FDA, so that
the pipe can be used in applications for drinking water.
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| Application of GRP Pipe | |
| The FRP pipe requires no regular maintenance, allowwing any above
ground, under ground, and subaqueous applications. Do you have to check and repair your steel pipes Just replace them with the FRP pipes, which is serviceable
semi-permanently | |
| | | - Sea Water intake & Outfall Piping
- Circulation piping for coling water
- industrial alpplicated
- food Processing
- Chemical transfer rocessing
- Potable & Sanitary Piping
- Chlorination piping
- Sewage piping
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| Fabrication of GRP Pipe | |
| GRP pipe can be fabricated in various ways. The following is GGT
standard for the fabrication of GRP pipes. Filament wound method is generally used to produce GRP pipe. | A. Filament Wound
Filament winding is processed as following: First, roving is
immersed into resin. And wind it continuously on rotational
structure called "mandrel" (normally spiral way) Filament winding
is used to fabricate pipes similar to tubes. And, fiberglass roving
strand is impregnated into liquid thermosetting resin and wound on
the rotational axis which has special pattern(Generally, angle is
54.5° ) The most outstanding characteristics of filament winding products
is that the mechanical stiffness is very high and the capability of
absorbing impact energy is great. Resins are 30~40% because stiffness is regarded as very important
factor for pressure vessel, pressure pipe and tank, etc. This is
depended on resin volume, winding angle. Thus, fabrication method
should be selected appropriately considering it's use. | | | Surface veil or chopped strand mat are used inside of
filament-wound pipe to enhance resistant power against corrosion. |
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| B. Hand Lay-up Hand Lay-up is a way of lamination by laying resin and glass fiber
alternatively on mold until lamination thickness reaches to some
point. |