... express automatic pipe to tube tig pulse argon arc Welding Machine Applicable industriesPetrochemical, boiler, refrigeration, medicine, aviation, ... IGBT inverter control dc pulse power, guarantee high welding efficiency and strong arc stability, Weld bead molding ... 15000~15000~1500 Power supply Rated input voltage380vRated welding voltageTIG welding, 22.6VRated power input9.0KWRated voltage no- ...