Why use GRP pipe?

Glass(fiber) Reinforced Plastic (GRP) is a composite material that consists of a polymer matrix and glass fibers. The polymer matrix is usually an epoxy, vinylester, or polyester thermosetting resin. The resin brings the environmental and chemical resistance to the product, is the binder for the fibers in the structural laminate and defines the form of a GRP part. The glass fibers add strength to the composite. They may be randomly arranged, or conveniently oriented. The most common type of glass fiber used for GRP is E-glass, which is alumino-borosilicate glass. E-CR-glass (Electrical/Chemical Resistance) is also commonly used in applications that require particularly high protection against acidic corrosion.

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Frequently Asked Questions

GRP (also referred to as GRE - glass reinforced epoxy) pipes are used where extra stiffness and strength is required. Typical applications are:

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• Fire fighting mains pipes
• Cooling water lines
• Effluent lines
• Sewerage and drainage lines
• Process water pipes
• Water purification pipes
• Ballast water

The extra stiffness and strength is imparted by the E-glass fibres in the GRP pipe.

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