... copper, aluminums and titanium. 1. Adopt international standard digital control IGBT inverter technology, use microprocessor to control accurately, ... 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 machines