... 3.Surface:smooth and clean Aluminum welding wire:1.Products: ER4043,ER4047,ER1100,etc.2.Diameter: 1.6/2.0/2.4/3 ... -alloy welding wire2.Festures:high quality,little spark,perfect shape3.Diameter:1.2mm,1.4mm,1.6mm4.Standards:GB/T8110-2008;AWS ... A5-105.Application:machinery,shipbuilding,boiler,pressure vessel,automobile,chemical equipment,steel structure and other fields.6.Common diameter ...