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  Products - GRP Pipes & Fitting
Why GRP/FRP Pipes
Design of GRP/FRP Pipes
GRP/FRP Pipes Composition
Pipes Specification
Method of Mfg. GRP/FRP pipes and its process
Jointing system of pipes and fittings
Installation Manual
GRP/FRP pipe wall consists of three layers perfectly adherent to each other and having different characteristics and properties in relation to their function
    Inner layer
    Structural wall
    External line
Pipe Layers
Inner Liner


Csm(Glass) Resin


Structure Liner
External Liner
(If Required)
Inner Liner
Liner or chemically resistant layer is the internal layer of the pipe. It is in direct contact with the conveyed fluid. This layer has the function to guarantee the resistance to the chemical corrosion and the impermeability to the pipe. The liner is made of two monolithic sub layers. The inner one, in direct contact with the fluid, is reinforced with glass veil, with a resin content of 90% and the outer one is reinforced with CSM glass, with a resin content of 70%by weight. The standard liner thickness is about 0.5 to 1.2 mm, higher thickness can be produced on request or as per design requirement.
Structure Wall
Glass reinforced layers guarantee the mechanical resistance of the whole pipe against stresses due to internal and external pressure, external loads and thermal loads. For GRP/FRP pipes, this layer is obtained by applying on the previous partly cured liner, continuous roving of glass wetted with resin, under controlled tensioning. For GRE pipes, the structural wall is wound directly on a wet liner. This layer can contain aggregates like silica sand in order to increase the stiffness of the whole pipe. Thickness of the mechanical resistant layer depends on the design condition.
External Liner
Top coat or external liner is the outer layer of the pipe which consists of pure resin added with UV protectors to protect the pipe from sun exposure. In case of severe exposure condition like aggressive soils or very corrosive environment, the external liner can be reinforced with a surfacing veil or added with fillers or pigments.
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Survey No.293-1 & 2,
Sakarda - Bhadarva Road,
Near Poicha Crossing,
Village : Poicha(Khandi),
Taluka : Savli
Dist : Vadodara, Gujarat, INDIA.
Pin : 391 780.
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