FRP pipes (DN40-200mm) are mainly used for water injection and oil pipeline in the oil field, gas pipeline and etc. High pressure FRP pipe is a new type of nonmetallic pipe. In its making, glass roving, soaking by low viscosity but strong adhesive bonding resin,winds around mould at the preset angle and layers. It has to be cured,released from the mould and then processed. Excellent corrosion ...