1.1 This practice describes methods ofpreparing surfaces of new and weathered hot-dip galvanized steel for painting.Hot-dip galvanized steel is produced by the immersion of fabricated or unfabricated products in a bath ofmolten zinc, as specified in Specifications A 123 or A 153/A 153M. This practice covers surface preparation on iron and steel products and hardware that have not been painted previously. Galva-nized surfaces may have been treated with protective coatings to prevent the occurrence of wet storage stain. This practice does not apply to sheet galvanized steel products nor to the coil coating or continuous roller coating processes.
