The coating of hot-dip galvanizing is relatively thick, usually 30-85 microns, and the coating has a higher anti-corrosion effect. Suitable for long-term rust prevention of steel products used for outdoor work, such as highway fences, power towers, large-scale fasteners, and other relatively sturdy steel products.

In theory, the anti-corrosion period of hot-dip galvanizing is long, but it varies in different environments: 13 years in heavy industrial areas, 50 years in the ocean, 40 years in suburban areas, and 30 years in cities.

However, in practical use, the environment is a very important goal for age. For example, acidic and alkaline environments can greatly reduce lifespan. Galvanized raw materials are more corrosion-resistant, mainly because their zinc coating content is relatively thick, so the rust and corrosion prevention time is relatively long）