How to Prevent Zinc-coated Steel Grating from Developing White Rust

How to prevent zinc-coated steel grating from developing white rust? Just ensure proper handling during production and storage. Generally, this will prevent the formation of white rust on zinc-coated steel grating.

During the production of steel grating panels, surface treatment is employed. This involves immersing the galvanized steel grating into a chromic acid solution, which forms a thin film on the zinc layer. Even if slightly damaged, the chrome salts near the break will dissolve in water and accumulate at the break, reforming a new film, thus preventing white rust. To prevent direct contact with zinc, oil is applied to the galvanized steel grating. Note that before painting, the oil on the steel grating surface should be wiped off. If the galvanized steel grating is to be painted, a phosphate film treatment can be applied. The phosphate adheres firmly to the surface of the galvanized steel grating, forming a loose and porous structure, providing an excellent base for paint and achieving a strong adhesion effect.

Galvanized steel grating panels should be stored in well-ventilated areas, or use a desiccator or drying oven during high humidity or drastic temperature changes to prevent condensation. Be cautious to avoid getting wet; if exposed to dew or water, dry it immediately. You may also open the packaging and use a fan or other air circulation methods for drying. Store in well-ventilated areas, and avoid locations prone to condensation due to significant temperature differences.

By following these points, you can prevent zinc-coated steel grating from developing white rust.