Butt Fusion Welding Machine, HDPE Pipe Welding Machine, HDPE Butt Welding Machine manufacturer / supplier in China, offering PP Coated-Steel Flange Plate Backing Ring/ PP-Steel Flange, Multiangle Workshop Fitting Welding Machine/Workshop Fitting Welder/HDPE Pipe Fitting Welding Machine, 250-500mm HDPE Welding Machine/ HDPE Plastic Welding Machine/ HDPE Butt Welder/ Thermofusion Welder and so on.