... gas shielded welding ,which is made of excellent steel by drawing,straightening and copper coating,it has characteristic such as open arc,slag ... -automatically.Packing: One spool is vacuum packed by aluminum film and then one carton outside. Cirtificate :ABS,RINA,DNV,BV,KR ... ,LR,GL,CCS,NK.Specification:ER70S-3ER70S-4ER70S-6ER70S-7 CO2 GAS SHIELDED WELDING WIRE