... /carton 4.Delivery:15-30days Copper Welding Electrodes /Copper Rods also called High Quality Copper Electrodes , Copper Welding Rods . *Diameter:2.5mm,3.2mm ... maximum of zinc quality up to 300g/sq.m.*Application: For building,handicrafts,silk screen weaving,expressway fence, product packaging and ... by lots of our domestic customers and oversea clients. Copper Welding Electrodes/Copper Rods