electrode (covered electrode) welding or welding melt filled Stainless Steel Electrode workpiece when the junction metal strip . Welding rod(coveredelectrode), is in the metal core welding outside the paint ( coating ) uniform , to the heartGround pressure applied to the solder core. Welding electrode core metal core , in order to ensure the quality and performance of the weld , butt in the core content of the metal elements areStrict regulations , particularly harmful impurities ( such as sulfur, phosphorus, etc.) Content, should be strictly limited, than the base metal .