... metal materials, also used in welding copper alloy, gold, silv DNY-10, DNY-16, DNY-25, DNY-35 movable hand held ... carbon steel, stainless steel, galvanized iron and other metal materials, also used in welding copper alloy, gold ... two different structure welding gun, which is better for welding work pieces. ModelDNY-10DNY-16DNY-25DNY-35Power ... , electrode: Water-cooled DNY-25 movable hand held spot welder