Conventional size :15-500mm Length: 4m PE and PP-R, while the use of hot-melt or fused ... screw connection for residential life, the mining, agriculture, water supply and drainage, irrigation, gas, exhaust tube , wire catheter, rainwater pipes, ... Conventional size :15-500mm Length: 5m PP pipe corrosion resistance, and has good strength, high surface hardness, surface finish, high temperature ...