What does the number in the welding rod mean?
The number in the welding rod represents the specification, model and content of the electrode
J422 is the name of this electrode...J422 welding electrode is common name, corresponding to international standard brand E4303. It is a kind of acid welding rod, the coating is made of titanium and calcium, and J stands for structural steel welding rod, and 42 is the tensile strength of 42kg/mm2 weld metal,2 application editorsMain application: low alloy steel used for welding low carbon steel structure and low strength grade. It is generally used for welding steel structure and welding of ordinary carbon steel pipe.SpecificationsJ422 welding rod diameter ranging from 2.5mm to 6.0mm, can be carried out in all position welding, AC and DC dual-use. With excellent welding process performance and mechanical properties, stable arc, less spatter, easy slag removal, beautiful weld formation
