In polyethylene semi hydraulic welding machine 250 all the belongings related to the steering valve, oil pump and pressure gauge are installed on the machine Use cases: This machine is used in water and sewer, oil and gas pipelines for pipes of PE100 ،PE80 ،PE63 with butt weld. It is used for oil and gas, water and sewer pipelines.First the pipe is placed in both ends of the welding machine (fixed and mobile) and after necessary settings the molds will be closed.