... 31 years history 3) Raw material: Qingdao Steel mig brass welding wire1) Quality approved byJIS, GL, LR,ISO9001 2) 31 ... 500MPa high strength steels,welding in cars,building,bridgeCo2 mig welding wire AWS ER70s-6 :1. Properties: Used for welding low carbon steel ... and low alloy steel structures, especially for welding of thin plates and can be ...