Features of galvanized steel tube:
1. The zinc coating is thicker, with detailed, uniform and non-porous crystals, and excellent corrosion resistance;
2. The zinc layer obtained by electroplating is relatively pure and corrodes slowly in the mist of acid and alkali, 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. The zinc coating is passivated by chromic acid to form white, colorful, military green, etc., which is beautiful and generous, and has certain decorative properties;
5. It has a thick and dense pure zinc layer covering the surface of the steel, which 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 forms 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 steel structural parts are hot-dip galvanized, 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 the steel parts, and is beneficial to the turning of 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 hot-dip galvanizing is bright and beautiful.
11. The pure zinc layer is a galvanized layer endowed with plasticity in hot-dip galvanizing. Its properties are basically close to pure zinc and have ductility.
The use of hot-dip galvanizing steel tube has expanded with the development of industry and agriculture. Therefore, hot-dip galvanized products are used in industries (such as chemical equipment, petroleum processing, ocean exploration, metal structures, power transportation, shipbuilding, etc.), agriculture (such as sprinkler irrigation, warm rooms), and construction (such as water and gas transportation, wire sets). Pipes, scaffolding, houses, etc.), bridges, transportation, etc., have been widely used in recent years. Because hot-dip galvanized steel tube have the characteristics of beautiful surface and good corrosion resistance, their use scale is becoming more and more extensive.
