Prevention and treatment methods of white rust on galvanized coils

When galvanized products are stored and transported in a humid environment, since there is no free flowing air on the surface, the surface of the coating is prone to electrochemical corrosion, and white or gray powdery corrosion products, namely white rust, appear.

Prevention of white rust:

1. Several desiccants can be placed during packaging

2. Precision packaging of steel coils, waterproof paper + plastic film + outer packaging of steel coils

3. Maintaining a low humidity environment and adequate ventilation around the steel coil can reduce white rust

Treatment of white rust

1. Slight white rust can be dried in a ventilated place for a period of time and wiped off with a dry cloth.

2. Moderate white rust can be removed with a hard-bristled brush (note that wire brushes cannot be used).

3. For severe white rust, lightly sand it with sandpaper, and then apply special galvanized repair paint to repair it.

Editor: Lucas

Mail: lucas@yangtzesteel.com