WSM IGBT Pulse argon arc welding machine seriesEnriched function setting, adjustment design, meet high welding quality needs. WSM IGBT Pulse argon arc welding machine series WSM-315/ WSM-400/WSM-500TraitEnriched function setting, adjustment ... by level, base value current, welding current, attenuation time adjustment at any time.Multi pulse adjustment function, fast pulse current upward and downward ...