Weldable materials: carbon steel, stainless steel, alloy steel, copper and other metals. WS-160, WS-200, WS-250, WS-315 ... stability, fast dynamic response, low spatter,good weld appearance4.Stable and reliable, energy efficient, small size, light weight5. Unique ... materials: carbon steel, stainless steel, alloy steel, copper and other metals. ModelWS-160WS-200WS-250WS-315WS-400Power VoltageAC 220V±15 ...