The electrode consists of two parts: the core and the coating. The welding rod is the coating (coating) outside the metal core evenly and compactly applied to the core. The electrode types are different, so is the core. The core is the metal core of the welding rod, in order to ensure the quality and performance of the weld, the content of the metal elements in the core have strict regulations, especially the content of harmful impurities (such as sulfur, phosphorus, etc.), there should be strict restrictions, better than the parent material.

Tianjin jinqiao welding material electrode junction 422j40.50 E4303