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Removal of Hot Dipped Galvanizing from Steel




Is there anyway to remove hot dipped galvanizing from ASTM A572 Gr. 50 steel beams? I'm looking for a method to remove the galvanizing from the bottom flange of a beam in an existing parking garage.

Ryan McNeil
steel contractor/project manager - Bethlehem, Pennsylvania
July 15, 2009


Hi, Ryan. muriatic acid ⇦ on eBay or Amazon [affil link] will easily remove the galvanizing, but you have personnel protection issues and the fact that muriatic acid fumes and can corrode other things. Make sure there are no cars in the area, and that you have great ventilation, and that there is no chance of personnel injury from the acid.

Regards,

Ted Mooney, finishing.com
Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
Ted is available for instant help
or longer-term assistance.
July 16, 2009


July 31, 2009

Sir:
Be sure to clean up the acid after dissolving the zinc because it will attack the concrete.
Regards, Dr. Thomas H. Cook, Hot Springs, South Dakota, USA

Dr. Thomas H. Cook
Galvanizing Consultant - Hot Springs, South Dakota, USA




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