Which steps are typical post-weld cleaning steps for stainless steel to avoid corrosion?

Which steps are typical post-weld cleaning steps for stainless steel to avoid corrosion?

• A. Baked enamel coating after weld
• B. Only paint with rust-inhibiting paint
• C. Remove heat tint with solvent or pickling solution, rinse, and perform passivation to restore corrosion resistance; dry thoroughly.
• D. Quench in water to cool quickly.

Answer: (C)