Welding electrodes are used for Arc welding purposes. The electrode is coated with the flux. Although electrodes are produced in different gauges, for the purpose of calculation for financial implications of technical details, the assumption has been made for the production of electrodes of 4mm dia core rods.

A welding electrode is a metallic rod infused with 2 different metals, wires, or filler which when you connect from your welding machine to the base metal, starts melting due to extreme electrical heat to join two different parts of metal with a durable smooth finish.