Galvanized square tubes are divided into hot-dip galvanized square tubes and cold dip galvanized square tubes in terms of production process. It is precisely because of the different processing of these two types of galvanized square tubes that they have many different physical and chemical properties. Overall, they have many differences in strength, toughness, and mechanical properties.
The square tube structure has high invariance, and the steel structure based on hot-rolled square tubes has the characteristics of reasonable structure, good plasticity and flexibility, and high structural stability. It is suitable for building structures with high vibration and high intrusion loads, and can resist natural disasters, especially for construction structures in earthquake prone zones. The uses of square tubes include construction, machinery manufacturing, steel construction projects, shipbuilding, solar power brackets, steel structure engineering, power engineering, power plants, agricultural and chemical machinery, glass curtain walls, automotive chassis, airports, boiler construction, and highway railings.
Characteristics of galvanized square tube:
The galvanizing process enhances its protective effect and corrosion resistance. The entire structure is made of zinc, forming a dense quaternary crystal. This crystal forms a barrier on the steel plate, effectively preventing corrosion factors from penetrating. The corrosion resistance comes from the strong barrier layer protection function of zinc. When zinc is sacrificed for protection in areas such as cutting edges, scratches, and coating abrasions, it forms an insoluble oxide layer, providing barrier protection.
Hot dip galvanized square tube has good strength, toughness, plasticity, welding and other process properties, as well as good ductility. Its alloy layer adheres firmly to the steel base, so hot-dip galvanized square tube can be formed by various methods such as cold stamping, rolling, drawing, bending, etc. without damaging the coating; Suitable for general processing techniques such as drilling, cutting, welding, cold bending, etc. The surface of hot-dip galvanized parts is bright and beautiful, and can be directly used in engineering according to needs. Hot dip galvanized square tube has been widely used in glass curtain walls, power towers, communication grids, water and gas transmission, wire conduits, houses, bridges, metal structures, power transmission, and other fields due to its excellent performance. In recent years, it has been widely adopted.
Characteristics of hot-dip galvanized square tube:
1. The hot-dip galvanized square tube has a thick zinc coating, fine and uniform crystallization without pores, and good corrosion resistance;
2. The zinc layer obtained from hot-dip galvanized square tube electroplating is relatively pure, and it corrodes slowly in acid, alkali and other mist, which can effectively protect the steel substrate;
3. The hot-dip galvanized square tube zinc coating is passivated with chromic acid to form white, colored, military green, etc., which is beautiful and elegant, and has a certain decorative value;
4. Hot dip galvanized square tubes can be formed through various processes such as cold stamping, rolling, and bending without damaging the coating due to the excellent ductility of the zinc coating.
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