heat Element:Heating element are made of non-corrosive material,Teflon Coated Die Platesmoulds for pipe welding machine:covered with American famous coatings teflon,thickeningtemperature rang:0-300degreevoltage rang:220±25vpower:800w 50HZspecification:20mm 25mm 32mm 40mm 50mm 63mmwelding materail:plastic pipeOD (mm)Heating Time (s)Depth (mm)Cooling time(min)2051432571633282044012214501822.556324246The operation and the matters needing attention see the instruction booklet.note:within fixed processing time,the connect can be corrected,hower,it is prohibited to rotate .melting connection request.