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Chemical polish finish on stainless tubing

Q. Is there a chemical process to bring #4 stainless finish to a high polish, we are now doing it by hand rubbing.

Joseph Belli
Mfgr - Montreal, Quebec, Canada
2004

A. Are you talking about internal surface polishing? if yes what is the max length, min diameter? There are two ways to polish internal surface: Electropolishing without pumping the electrolyte for pipes with diameter larger than 80 mm;

Electropolishing by pumping the electrolyte -for pipes with diameter from 14 to 80 mm. Both methods are based on acid-free electrolyte in which foam formation during the process do not prevent from electropolishing.

Anna Berkovich
Russamer Lab - Pittsburgh, Pennsylvania
(ed. update July, 2025: sorry, Anna has retired)
2004

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