Seamless Four Point Welding Machine for Colored PVC Doors and Windows Technical parameter: Input Voltage: 220V 50Hz Input Power: 3.5 kw Operation Air Pressure: 0.5-0.8 mpa Air Consumption: 150 l/min Welding Height: 20-120 mm Welding Width: 120 mm Welding Range: 400-3500 mm Overall Dimension: 4400*1200*1700mm Machine Weight: 2500 kg