1. DC TIG welding, DC manual welding 2. SCR control. 3. Single phase 220V or two ... 220V/380V input power. DC DC manual welding and DC TIG welding;3.Suitable for welding the stainless steel, carbon steel, copper, etc ... equipment, boiler, pressure container, vehicle make, shipbuilding, machinery maintain, mould make and maintaining. ParameterUnitWS-160WS-180WS-200Rated primary voltageV1 phase ...