... standard,high quality,high demand welding 3.Perfect function IGBT Air Plasma Cutting MachineFeature and Application1.Advanced IGBT inverter technology ... Efficiency(%) 85 Rank of protection IP21 Arc Starting Non-touch Air Pressure (KG) 4-6 Max cutting thickness (mm) 1 ... ,low alloy steel,aluminium,copper,aluminium alloy,copper alloyThickness of sheet(mm) stainless steel,carbon steel, low alloy steel 1. ...