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Type B finish on Stainless Steel Type 304

Contractor is installing new Stainless Steel type 304 18 gauge ductwork in a lab. The plan is to prime one coat and paint two coats to match an existing white. I have the correct specs for the paint for stainless steel.

My question is what is Type B finish?

Is Type B the correct finish to paint ductwork?

Thanks,
David

David Goulet
Engineer - Concord, New Hampshire, USA
October 25, 2010

Hi, David. "Type B" means a hundred different things depending on context. I personally haven't ever heard of it in regards to a finish for painted stainless steel, although it's widely used for painted concrete. So if you don't know what it means, who is spec'ing it and why?

Regards,

Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
October 26, 2010

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