Kobe Steel (KOBELCO) Covered Arc Welding Electrode FAMILIARC LB-52, electrode diameter 3.2mm x electrode length 400mm, 5kg/box. This is a representative brand of low-hydrogen type welding electrodes for 490Mpa class steel. It is a covered electrode for iron (mild steel) that is ideal for welding shipbuilding, construction, bridges, pressure vessels, etc. LB-52 is the most representative low-hydrogen electrode, and is widely used for its excellent X-ray performance and mechanical properties. Workability is good, with concentrated arc, slag removal, and bead appearance. It can be used for 490Mpa class steel, which has higher yield strength and tensile strength than general 430Mpa class steel.