... /4.0/4.8mm 3.Surface:smooth and clean Aluminum welding wire:1.Products: ER4043,ER4047,ER1100,etc.2.Diameter: 1.6 ... .8mmER1100: can be used in architeture,decoration,euqipment,pipe,spinning machine..ER4043: Can be used in bosting,ship,engine,chemical plant ... : Can be used in welding or alloy production.ER5356: It's popular metalic welding material.Learn more, pls contact us freely. aluminum welding wire