How to combine the paint and galvanized steel
I'm afraid so. Your situation is not clear. Let's try it out first. If you peel it off, you can polish it slightly.
No, as long as you choose the special galvanized steel pipe paint, mcGZ type is ok!
You can spray paint directly. General zinc plating, basically do not need to paint, if galvanized can not resist the corrosive environment, you can use non galvanized just now, and then use the way to strengthen the anti-corrosion (primer + epoxy resin, or asphalt).
