HDPE Butt Fusion Fittings, HDPE Socket Fusion Fittings, HDPE Electrofusion Fittings manufacturer / supplier in China, offering Reliable Pert II Electrofusion Reducing Tee 20mm-40mm, HDPE Socket Fusion Equal Diameter 90-Degree Elbow, Pert Type II Electrofusion Ef Equal Tee and so on.