... ,Voltage: 220V, 2,frequency:50/60Hz; 3,Power: 1500W 4,20-40MM sockets PPr welding machine:(1.) welding connector(2.) Plastic ... .(4.) Voltage: 220V±10%,frequency:50/60Hz; Power: 1500W(5.) Component: 20-40MM sockets, screws, Screwdriver,hexagonal spanners.(6.) The size of ... the desired depth, to form a uniform flange joints. Practical 20-40mm ppr pipe welding machine