GRP (Glass Reinforced Plastic) piping is a type of piping that is constructed from fiberglass strands that are coated with thermosetting resin and wound around a mandrel to form a composite structure. GRP piping is ideal for high-pressure applications and can be used in a variety of applications, including water, wastewater, and industrial systems. It is resistant to corrosion, temperature extremes, and other external factors. GRP piping is lightweight and easy to install, making it a popular choice for many applications.