... Hot Fusion Welding Machine 1.Material: aluminum alloy 2.Sizes: 20 to 110 3.Pressure Rating: 2.5MPa PPR Pipe Hot ... Fusion Welding MachineHot welding machine uses electric melting connection with welding ... in low pressure loss and high volumeHot welding machine working power and diameters:1) 600W, 20 ... ,500W, 75-110mm PPR Pipe Hot Fusion Welding Machine, High grade aluminum alloy