Suitable for welding stainless steel, carbon steel, copper, aluminums and titanium. 1. Adopt international standard digital control IGBT inverter technology, use microprocessor to ... Satisfied AC/DC TIG welding, mix AC/DC TIG welding, MMA welding, and so on.5. Suitable for welding stainless steel, carbon steel, copper, aluminums and titanium. Digital IGBT Inverter AC/DC Pulse TIG WSE-315D welding ...