... ER49-1 welding wire for gas shielding arc welding : 1,Diameter: 1.2mm, 1.4mm, 1.6mm 2, Approved by CCS, ER49-1 welding wire for gas ... electrode with excellent operator appeal. E7016 can be used for general construction welding applications such as bridges, buildings, ... removed from base material to prevent cracking and blowholes.• For improved impact properties, avoid use of excessive amperage levels ...