This kind of mould(socket) applys in plastic pipe welding mac hines, which is made of Aluminium alloy, to protect the plastic pipes from adhering when welding the pipes,Foot: A special foot with clamp that enables working at any location. heat Element: heating element with thermostattemperature rang:0-300degreevoltage rang:220±25vpower:1000w 50HZspecification:20mm 25mm 32mm 40mm 50mm 63mmwelding materail:ppr pe pp-cOD (mm)Heating Time (s)Depth (mm)Cooling time(min)2051432571633282044012214501822.556324246