The roof of the pickling plant needs anti-corrosion treatment because the pickling process will produce a large amount of acidic gas and liquid. These corrosive substances will cause serious corrosion to the building materials, resulting in damage to the roof structure and shortened service life. Anti-corrosion treatment can effectively protect the roofing materials, extend their service life, ensure the safety and stability of the building, and reduce the frequency of repairs and replacements, thereby reducing maintenance costs.