... welding wire,Co2 welding wire,ER70S-6 Mig welding wire,Co2 welding wire,ER70S-6"ER70S-6 is a kind of mild steel copper coated welding wire, ... building, construction machine, railway construction, pressure vessel for semi-auto or automatic gas shielded welding.Conform withGB/T ... D100mm D200mm D270mm D300mm K300mm1kg5kg15kg18kg20kg chemical composition of welding wire(%)CMnSiPSCrNiCu0.06~0.151.40~1.850.80 ...