As an important structural material, steel structure usually needs to be protected from corrosion to ensure its safe use and prolong its life. The following are some common anti-corrosion methods for steel structures:

1. Galvanizing: The steel structure surface can be galvanized, and a layer of zinc can be covered on the steel surface to form a corrosion resistant protective layer. Galvanizing is generally suitable for indoor environment and mild outdoor environment.

2. Spraying: The steel structure surface can be coated with a special anti-corrosion paint to prevent the steel from contacting with air and water. Spraying anticorrosive paint is applicable to indoor and outdoor environments. Different types of anticorrosive paint can be selected to adapt to different working environments.

3. Hot-dip galvanizing: During the manufacturing of steel structures, a layer of zinc is applied to the surface in advance. This method is called hot-dip galvanizing. Hot dip galvanizing is a method with high corrosion resistance, which is usually suitable for extreme environments, such as marine environment or chemical industry environment.

4. Anti-corrosion coating: a special anti-corrosion coating can be applied on the surface of steel structure, which can provide additional protection to prevent the contact between steel and the surrounding environment. Anti-corrosion coating can be applied to different working environments, and suitable materials can be selected to adapt to different environments.

In short, different anti-corrosion methods for steel structures are applicable to different working environments and requirements. When selecting an appropriate anti-corrosion method, it is necessary to take into account the use environment, working conditions, construction period and cost, and select the most appropriate anti-corrosion measures to ensure the safe use and long-term service life of the steel structure.