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GRP/GRE Pipes

Glass reinforced Plastic pipes represent the ideal solution for the abduction of any kind of water, chemicals, affluent and sewers, because they combine the advantage of corrosion resistance, typical of plastics, with a mechanical strength which can be compared with the steel one.
GRP pipes were developed in response to the difficult conditions of chemical facilities which require products that can withstand corrosive chemicals, high temperatures, constant washdowns and multiple impacts.

Designed to stand up to the harsh environmental conditions encountered in the oil and gas industry, GRP products are the ideal solution for both offshore and land based production. Key features such as corrosion and slip resistance, flame resistance, impact absorbency, non-conductivity, high strength-to-weight properties, and low maintenance make these products ideal for all types of oil and gas facilities.

The advantages of GRP pipes vs traditional materials can be summarized as follows:

Light weight (1/10 of concrete pipes, ¼ of steel pipes). 
Workability of the material on site with the use of simple tools.
Easier assembly and installation. 
Longer pipes than made with another materials; no welding needed and less joints therefore lower cost and easier installation.
Absolute impermeability of pipes.
Smoothness of the internal wall, minimizes P drops and avoids the formation of deposits.
Higher transport rate.
Better hydraulic performance than steel, ductile iron and concrete 
Higher corrosion resistance.  No protections such as coating, painting or cathode are needed.
Lower cost and better maintenance. 
Low thermal conductivity w ; it reduces condensation problems and the consecutive moisture corrosion.
Hazen Williams flow coefficient is 150, due to low friction losses;
Less pumping energy is required compared to steel and concrete pipes or same flow rates can be ensured using smaller diameters.

credits: prospero