... 500MPa high strength steels,welding in cars,building,bridges SG2 copper coated co2 welding wire AWS ER70s-61) welding wire ... 0.9mm,1.0mm,1.2mm,1.6mm,2.0mm4) weight per spool/roll: 4.5kg,4.7kg,5kg,15kg, ... 6 BS A18 EN G3Si1 Wire Size Spool Size Net Weight 0.8mm1.0mm1.2mm1.6mm D100mm D200mmD270mm D300mm K300mm ... oil,rust,water etc from the work parts SG2 copper coated co2 welding wire AWS ER70s-6 factory