... welding wire er70s-6 is a copper surfaced carbon-steel welding wire (gas-shielded welding wire), Gas-Shielded ... Metal spool, plastic spool Application: Mainly used for carbon-steel, Low alloy steel of 500 MPa class, widely used in industries ... of vehicles, bridge-engineering, bulding, machine-engineering, steel structures, shipbuilding etc... Shandong Chengjiang Welding Industry Co., Ltd. ...