1.The structure of the pipe wall such as the inner pad, the thickness of the FRP, resin and sand can be designed according to the working pressure, the depth of the underground, the traffic burden and engineering geology condition hardness.
2. High strength and lightweight: It has a specific gravity of 1.5-2.0 g/cm3 which is only 1/3 of that of steel, 1/5 of that of cast iron, 1/10 of that of that cement pipe. The light weight of FRP pipes facilitates its transportation and installation. It has higher horizontal strength than the ones of steel, cast iron etc.
3. Smooth inner, good for carrying water. The inner liner roughness factor is 0.0084, and the characteristics ensure that no filth can be stayed on the inner pad so that it increases its capacity of floating.
2. High strength and lightweight: It has a specific gravity of 1.5-2.0 g/cm3 which is only 1/3 of that of steel, 1/5 of that of cast iron, 1/10 of that of that cement pipe. The light weight of FRP pipes facilitates its transportation and installation. It has higher horizontal strength than the ones of steel, cast iron etc.
3. Smooth inner, good for carrying water. The inner liner roughness factor is 0.0084, and the characteristics ensure that no filth can be stayed on the inner pad so that it increases its capacity of floating.