In the process of gas welding or electric welding, covered electrode melts the metal strip filled at the joint of the welded workpiece. Covered electrode is usually made of the same material as the workpiece. Coated covered electrode is a kind of coated melting covered electrode for covered electrode arc welding, which consists of coated covered electrode and flux-cored wire. According to the national standard Steel Wire for Welding (GB 1300-77), special steel wire for welding can be divided into carbon structural steel, alloy structural steel and stainless steel.
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