... to use, high efficiency, software can be upgraded and cooperated with automatic welding machinery.2. Adopt soft contact functional key-press ... technological parameter can be loaded easily.4. Satisfied AC/DC TIG welding, mix AC/DC TIG welding, MMA welding, and so on.5. Suitable ... , carbon steel, copper, aluminums and titanium. Digital IGBT Inverter AC/DC Pulse TIG WSE-315D welding machines