... , copper, aluminums and titanium. 1. Adopt international standard digital control IGBT inverter technology, use microprocessor to control accurately, ... machinery.2. Adopt soft contact functional key-press in the panel, single knob adjust stepless, digital display show kinds of ... steel, carbon steel, copper, aluminums and titanium. Digital IGBT Inverter AC/DC Pulse TIG WSE-315D welding machines ...