Zero Spangle Galvanized steel sheet in coils used for Home appliances borad heavy skin passed chromated 3+/ free

The products of galvanized steel sheet and coils are mainly used in such industries as construction industry, light industry, automobile industry, agriculture-livestock-fishery industries and commercial industry etc.

• For construction industry, galvanized steel sheet can be used to produce the anti-corrosive roof panels and roof grille etc.

• For industrial and civil construction usage.

• For light industry, producing appliance housings, civil chimneys and kitchenwares etc.

• For automobile industry, producing anti-corrosive auto parts for cars etc.

• For agriculture-livestock-fishery industry, producing appliances for storage and transportation of grain, frozen processing appliances for meat and aquatic products and so on.

• For commercial industry, producing appliances for storage and transportation of goods and materials, packaging appliances and so on.

Passivation.

Galvanised sheet if exposed to the air for a long time, the surface of the steel plate will appear white rust due to oxidation, affecting the aesthetic, so the surface needs to take the passivation treatment designed to prevent rust.

At present, the passivation treatment is mainly used chromate passivation treatment, including environmental passivation, all chromium-free passivation and fingerprint-resistant passivation.

1. Among them, environmentally friendly passivation is ordinary passivation, the passivation film contains trivalent chromium;

2. Chromium-free passivation film completely free of chromium, more environmentally friendly, corrosion resistance is also better than the environmental protection passivation film;

3. Fingerprint-resistant passivation is specially developed to solve the problem of rusting due to fingerprints during the assembly of home appliance panels, and the passivation film is also completely free of chromium, which meets the high standard of environmental protection requirements.

4. In addition, Nippon Steel has developed chromate films with strong corrosion resistance, which can meet various requirements such as processing performance and appearance, and are produced stably on continuous production lines.