... 220v/230v/240v 50-60hz portable tig welding machine,1 phrase,110v/220v/230v/240v,50-60hz ... speed MOSFET control Technology,200Amps DC TIG welding current Typical Applications:hobby, industrial automation, oil / chemical textile, aviation ... contracting, shipyard installation / repair, dairy industry, construction, aluminum welding industrial, portable, ship service / repair, heating, ventilation and air ...