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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 [affil links] 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, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
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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