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Is there a standard for stainless steel finishes, specifically No. 4 dairy?

Looking for a standard on finishes for Stainless steel. Specifically No. 4 dairy finish on stainless steel.

Thank you,

Eric Updike
Manufacture - Monroe, Wisconsin
2003

2003

I've been thinking about this question a long time. I've never heard of a S.S. specification for the dairy industry; however there is a roughness grade spec called N + a number from 1-12 which relates to Ra values in both micrometers MM and microinches MI. An N4 spec is .2 MM or 8 MI. Hope that helps.

AF Kenton
retired business owner - Hatboro, Pennsylvania

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