Welding Electrodes are consumable welding rods used in manual arc welding processes to join metal components by creating a strong fused joint. They consist of a metal core wire coated with flux, which protects the weld area from contamination and improves arc stability and weld quality. Welding electrodes are manufactured in various diameters and grades as per standard welding specifications and are identified by their size and electrode classification, with selection based on base metal and application.