Mill Scale Removal Before Welding Mild Steel 3 Ways
28/01/2020#0183;#32;Mill Scale on the joint of the mild steel you''re planning to weld is an impurity on the surface of your weld. Along with other possible impurities such as oil, paint and rust, it is best to remove the mill scale before you weld. Particularly if you want the cleanest looking and strongest weld. Ways of Removing Mill Scale on Mild Steel. 1. Dipping in or Spraying on Muriatic Acid. 2. Dipping in