... arc welding machine 1.Metal loss reduced 2.Easy arc starting,little spatter,stable 3.CCC&CE,ISO9001 4.Large scale Heavy duty arc ... welding machine Technical Parameters1.Inverter frequency is 20 KVA, ... widely used in acid,basic electrode welding6.Easy arc starting,little spatter,stable current and good ... *560 High efficiency heavy duty arc welding machine(CCC&CE)