Hot-Dip Galvanizing

I am hot-dip galvanizing, commonly used for industrial anti-corrosion. I require immersion in a molten zinc bath, where the material reacts with the molten zinc to form a protective film on the surface through chemical reactions. This process relies on large-scale equipment and is highly restricted by site conditions—it can only be completed in factories, with moderate efficiency.

Post-maintenance and repair are troublesome for me, so I am only suitable for static, large components that don’t require frequent maintenance.

Before the galvanizing process, the material needs to undergo tedious pre-treatment steps: pickling, water washing, phosphating, and passivation.

My process generates chromium-containing wastewater, which severely pollutes the environment. In developed countries, environmentally unfriendly hot-dip galvanizing has been banned; instead, they import products manufactured in developing countries.

My anti-corrosion lifespan is generally 10–15 years (with regular maintenance required). I have a lower initial cost, suitable for large-scale standardized production. However, post-maintenance is difficult, and comprehensive costs increase with service life.

Cold-Sprayed Zinc

Hello everyone, I am cold-sprayed zinc! Through a special process, I disperse high-purity zinc powder (content ≥96%) in water-based or solvent-based coatings and form a zinc layer directly on the surface of components via spraying. I can be applied anytime, anywhere; after spraying, I dry quickly, significantly shortening the construction period. On-site repair and renovation are extremely convenient with me.

Before spraying, I only require simple surface treatment—just grinding to remove rust. I offer excellent adhesion, can withstand salt spray corrosion for over 3000 hours, and have an anti-corrosion lifespan of up to 30 years.

I have low VOC emissions and comply with international environmental standards.

My coating is flexible and easy to repair (simply spray over damaged areas). I am suitable for dynamic, complex structures, and on-site repair needs, such as bridges, marine engineering, and chemical equipment.

Although my coating cost is higher than hot-dip galvanizing, my construction efficiency is high, maintenance costs are low, and I offer significant long-term comprehensive cost advantages. Despite being around for less than 10 years, I have already become the mainstream in heavy-duty anti-corrosion coatings.

Summary