C5210 t0.6 / SKD11 φ1.0 _34 C5210 t0.6 / SKD11 φ1.0 Dedicated electrodes are required due to unstable electrode contact Since the current is concentrated on the flange part, it is better to use stud welding. Spot Welder: HSW-03A Electrode: PSW-P1 HSW-FB1