Ppr pipe welding machine : 1,Voltage: 220V, 2,frequency:50/60Hz; 3,Power: 1500W 4,20-40MM sockets PPr welding ... the power supply must be protected with a ground line), according to the corresponding models of the machine ... 3. With vertical cutting device to cut off pipe tube, pipe and fittings will also promote the welding device ... a uniform flange joints. Practical 20-40mm ppr pipe welding machine