Galvanized Has Excellent Resistance To Atmospheric Corrosion

A protective film is easy to form on the surface at room temperature, so the biggest use of zinc is in the galvanizing industry. It is mainly used for the surface coating of steel and steel structural parts (such as galvanized sheets), and is widely used in industries such as automobiles, construction, ships, and light industry. After the 21st century, western countries began to try to directly use zinc alloy sheets as roof covering materials. The service life can be as long as 120-140 years, and it can be recycled. The service life of using galvanized iron sheets as roofing materials is generally 5-10 years. . After the 21st century, the amount of hot-dip galvanizing of steel strip has increased significantly. Electro-galvanization is also used, but this method is generally used for thinner coatings and different surface finishes. The use of zinc-containing paint is another method of coating; for objects that are in continuous contact with water, such as large steel components used in ships, bridges and offshore oil and gas derricks, they only need to be connected to large zinc blocks. Be protected, but the zinc block needs to be replaced regularly.