Surface preparation of stainless steel before painting

I'm a paint engineer in a shipyard. I have stainless steel equipment for sea water immersion environment to paint. This equipment can't be blasted and I would like to know if a good chemical process can be applied, which kind of treatment (kind of acid, by immersion or pulverisation) and which kind of primer can be specified, and why not etching primer? We have a lot of paint adhesion problem on this kind of support and we don't find a treatment which give good performances in Im2 or C5m (ISO 12944) environment.

Christian Favennec
ship engineering - France
April 16, 2008

Hi , I would suggest a ferric chloride ⇦this on eBay or Amazon [affil links] etch , which helps matt a s/s surface prior to plating/ and painting .

hope this helps

Jay Smith
- Essex, UK
May 1, 2008

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