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Differences between a No. 3 and a No. 4 finish on Stainless Steel

We are aware that there differences in same finishes between stainless steel suppliers in the U.S. versus China. I would be interested in knowing what are the main appearance differences between No.3 and No. 4 finishes on stainless steel domestically and internationally.

Arnold Mays
Supplier Quality Engineer for a manufacturer of stainless steel appliances. - Madison, WI, U.S.A.
March 20, 2009

The following link shows the differences between a No. 3 and No. 4 finish. Truth is most metal centers will stock a No.3/No.4 finish so they can sell it as either or.
Architectural finish usually requires No. 4, whereas No. 3 is mostly for kitchen sinks and the likes....more industrial like finish.

www.ssina.com/finishes/sheetsamples.html#image

Michael Liu Taylor
specialty stainless steel distributor - Dallas, Texas
March 29, 2009

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