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Merit of GRP Pipe

GILGWANG GREENTECH

Merit of GRP Pipe

Country/Region China

Product Details

   
  
   
 

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.

 
 
   
 
  1. Corrosion Resistance
    -Both the inner and outer surfaces of the FRP pipe are corrosion resistant, eliminating the need for a lining process.
  2. Strength to Weight Ratio
    -The specific strength of the FRP pipe exceeds that of steel and stainless steel
  3. 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.
  4. 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.
  5. Low Thermal Conductivity
    -The FRP pipe has low thermal conductivity, saving the cost of heat insulation.
  6. Low Thermal Expansion
    -The FRP pipe has low thermal expansion, lowering deformation and the number of expansion joints required.
  7. FDA Compliance
    -The FRP is made of the certificated materials from FDA, so that the pipe can be used in applications for drinking water.
 
   
 

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   
 
   
   
 

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.

 
   
 

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.

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