... ,1.0,1.2,1.4,1.6 STANDARD:(AWS) ER70S-6 OR(GB/T8110-95) ER50-6,ER49-1 SURFACE;COPPER COATED SIZE ... ,1.2mm,1.4mm,1.6mmSTANDARD:(AWS) ER70S-6 OR(GB/T8110-95) ER50-6,ER49-1SURFACE:COPPER COATEDPACKING:15kgs/spool,1spool/ctn ... Certificate G8 the authentication Cooper coated Co2 welding wire ER70S-6