I recommend cold galvanizing and painting over the cold galvanize. I also
recommend that you NOT sandblast the tower unless its absolutely necessary
because you will lose even more galvanizing as a result! Best approach is
wirebrush and sandpaper unless virtually all of the galvanize is gone.
Suggest you call the American Galvanizers Assn (303)750-2900 and ask for a
copy of their excellent pamphlet: "Painting Galvanized Structural Steel"
They also have a WWW homepage.
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