Galvanized steel pipe is a commonly used building material, mainly divided into two categories: hot-dip galvanized steel pipe and electro-galvanized steel pipe. Hot-dip galvanized steel pipe forms a strong zinc-iron alloy layer by immersing the steel pipe in molten zinc. This method not only provides a uniform coating, but also significantly enhances the corrosion resistance of the pipe, making it suitable for use in construction, electricity, and It is widely used in fields such as fire protection and highways. In contrast, electro-galvanized steel pipes form a zinc layer on the surface of the steel pipe through electrolytic deposition. Although the cost is lower, its corrosion resistance is not as good as hot-dip galvanized steel pipes, so it is rarely used in new homes. In addition, there is zinc-infiltrated pipe, which is a new type of anti-corrosion material that penetrates zinc atoms into the surface of the steel pipe to form a dense zinc layer, which has high anti-corrosion performance and durability. Galvanized steel pipes are widely used. In addition to being used in water supply, drainage, heating and other piping systems in the construction field, they are also used in sewage, rainwater, tap water and other piping systems in the municipal field, and in the industrial field for petroleum, Fluid transportation pipelines in chemical industry, electric power and other industries.