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

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Removal of zinc coating on inside of galvanized pipe

How to remove Galvanized coatings inside the steel pipe, which are to be ceramic lined, with out any corroding effect to the pipes?

Satya Gowtam
research laboratory - Mumbai, Maharashtra, India
2003

Hi, Satya. Inhibited HCl should remove it almost instantly. That does not mean that inexperienced people can do it safely because, among other problems, there will be rapid release of a lot of hydrogen gas. After the removal, neutralize with a dip in a solution of sodium bicarbonate. Good luck.

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

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