Stainless Welds and Joints: Preparation Before Coating

Welds, seams and joints can have a different condition from the broad panel around them. Their preparation should be assessed as part of the component’s fabrication and maintenance history.

Inspect the completed metalwork

Record visible discoloration, residue and signs of deterioration near welds or fasteners. Ask for fabrication and post-treatment information where relevant. Do not assume a protective coating can substitute for required metal finishing or repair.

Use the appropriate specialist

If the area needs metal treatment, have a qualified professional define the process and accepted result. Avoid improvising chemical or abrasive methods from a general coating guide. Keep the coating supplier informed about the finish that will remain after that work.

Document the coating boundary

Once the surface is accepted, confirm which accessible areas will be treated and how joints will be maintained. Do not force product into concealed spaces without specific approval. Keep records of recurring marks and inspect the same details during routine cleaning. A coated broad panel does not remove the need to assess its adjoining connections.

See passivation versus coating and stains versus corrosion.