... for the fields of furniture, vehicle, electric power, construction, conduit.... WS series IGBT invert DC TIG welderItem\ModelWS-315WS-400WS-500WS ... current before operation and get the preset value when working.c). Past 100 T times arc starting test, high-frequency arc ... of furniture, vehicle, electric power, construction, conduit & pipeline and etc. WS series IGBT invert DC TIG welder