What are the specific applications and performance characteristics of galvanized round pipes?
1. The galvanized layer of galvanized round pipe is thick, uniform and non-porous, and has excellent corrosion resistance;
2. The zinc layer obtained by electroplating is relatively pure, corrodes slowly in the mist of acid, alkali, etc., and can effectively maintain the steel matrix;
3. Because the zinc coating has excellent ductility, it can be formed by cold punching, rolling, bending, etc. without damaging the coating.
4. After the zinc coating is passivated by chromic acid, it becomes white, colorful, military green, etc., which is beautiful and generous and has certain decorative properties;
5. With a thick and dense pure zinc layer covering the surface of the steel, it can prevent the steel substrate from touching any corrosive solution and protect the steel substrate from corrosion. In the general atmosphere, the surface of the zinc layer constitutes a very thin and dense zinc oxide layer surface, which is difficult to dissolve in water, so it has a certain maintenance effect on the steel substrate. If zinc oxide and other components in the atmosphere form insoluble zinc salts, the anti-corrosion effect is more promising.
6. With iron-zinc alloy layer, combined with compactness, it exhibits unique corrosion resistance in marine salt spray atmosphere and industrial atmosphere;
7. Because of the strong combination, zinc and iron are mutually soluble and have strong wear resistance;
8. After the galvanized round pipes of steel structural parts, it is equivalent to one annealing treatment, which can effectively improve the mechanical function of the steel matrix, eliminate the stress during the forming and welding of steel parts, and is beneficial to turning the steel structural parts.
9. Because zinc has excellent ductility and its alloy layer is firmly attached to the steel base, hot-dipped parts can be formed by cold punching, rolling, drawing, bending, etc. without damaging the coating;
10. The surface of the parts after galvanized steel pipe is bright and beautiful.
11. The pure zinc layer is a galvanized layer endowed with plasticity in the galvanized steel pipe. Its properties are basically close to pure zinc and have ductility, so it is rich in flexibility.
The use of galvanized round pipes has expanded with the development of industry and agriculture. Therefore, galvanized steel pipe products are used in industry (such as chemical equipment, petroleum processing, ocean exploration, metal structure, power transportation, shipbuilding, etc.), agriculture (such as: sprinkler irrigation, warm room), construction (such as: water and gas transportation, wire cover Pipes, scaffolding, houses, etc.), bridges, transportation, etc., have been widely used in recent years. Because galvanized steel pipe products have the characteristics of beautiful surface and good corrosion resistance, their use scale is becoming more and more extensive.
With the development of scientific and technological production, the scope of the electroplating industry has become more and more extensive. Now, the use of electro-galvanization has spread throughout the production and research departments of the national economy. For example, machine manufacturing, electronics, precision instruments, chemicals, light industry, transportation, weapons, aerospace, atomic energy, etc., are of great significance in the national economy.
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