Material: GRP
Diameter:￠700 mm 
Strong intensity,
Long service life :30-50 years
Anti-theft, 
Gas pipe inspection
Protect the environment

GRP composite material is a new material that made of fiberglass and resin. As its'light weight, high intensity, anti-corrosion and flame retardant, it's widely used in the power system, tele-communication and water supply system, instead of the traditional iron and steel material.