Should I Choose Galvanizing Or Hot-dip Galvanizing for Metal Protection? See The Key Differences Here.

For long-lasting durability of metal products, choosing the right surface protection process is crucial! There are significant differences between common galvanizing and hot-dip galvanizing.

Galvanizing (electrogalvanizing) deposits a zinc layer through electrolysis, eliminating the need for high temperatures and resulting in a simple process. However, the coating is thin (3-15μm), making thickness difficult to control, and offers weak corrosion resistance, making it easily damaged by acids and alkalis. However, its smooth surface and low cost make it suitable for small parts with low corrosion protection requirements, such as screws and nuts.

Hot-dip galvanizing involves immersing the metal in molten zinc at 450-500°C to form a zinc-iron alloy layer. This process is complex, but offers strong adhesion. The coating is thick (40-200μm) and offers excellent corrosion resistance, relying on electrochemical protection to withstand harsh environments. While it may exhibit zinc spangles or water marks on the surface and is more expensive, it is suitable for products requiring long-term durability, such as outdoor steel structures and bridges.

Choosing the right process ensures reliable metal protection!

Wuxi Ingks Metal Parts Co., Ltd.