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Sound technical content, curated with aloha by
Ted Mooney, P.E. RET
Pine Beach, NJ

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STEEL WITH ZINC FINISH

WHAT IS THE DIFFERENCE BETWEEN THESE FINISHES IN STEEL :
GALVANIZED STEEL
GALVANNEAL HOT-DIP ELECTRO-GALVANIZED
SATIN COAT (ZINC ON THE STEEL PLATE)

THANK'S

G. KOUBY

Gérard KOUBY
a ceiling panel mfgr. - Montréal, QUÉBEC, CANADA
2003

More info can be found by searching the site, but briefly: galvanized steel would be used if the item is not to be painted, whereas the galvanneal finish is for parts that will be painted.

There is no such thing as hot-dip electrogalvanized. Zinc coatings are applied by either hot-dipping in molten zinc or by electroplating--which is sometimes called electro-galvanizing. Most English-speaking metal finishers don't like the term 'electro-galvanizing' if my circle of acquaintances is typical; but if you think about the origin of the word 'galvanizing', you'll understand why we can't call it wrong.

'Satin coat' doesn't have any specific meaning to me. Good luck with your specs.

Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
2003

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