150x150mm 75X75X8mm Zinc Coated Tube ASTM A36 Square Structural Tube

Galvanized square tube It is mainly used in curtain walls, construction, machinery manufacturing, steel construction projects, shipbuilding, solar power generation brackets, steel structure engineering, power engineering, power plants, agricultural and chemical machinery, glass curtain walls, automobile chassis, airports, etc. Galvanized square pipe is a hollow square section steel pipe with a square cross-section shape and size, which is formed by cold bending and high-frequency welding using hot-rolled or cold-rolled galvanized strip steel or galvanized coil as the blank. ; Or the cold-formed hollow steel pipe made in advance and then hot-dip galvanized galvanized rectangular tube. Hot-dip galvanized square tube: It is a square tube made by welding steel or steel strip after crimping. On the basis of this kind of square tube, the square tube is placed in a hot-dip galvanizing bath after a series of chemical reactions. A square tube formed. The production process of hot-dip galvanized square tube is relatively simple, and the production efficiency is very high, and there are many varieties and specifications. This kind of square tube requires very little equipment and funds, and is suitable for the production of small galvanized square tube manufacturers. But in terms of strength, the strength of this steel pipe is far lower than that of a seamless square pipe. The cold galvanized square tube uses the principle of cold galvanizing on the square tube used to make the square tube have anti-corrosion performance. Unlike hot-dip galvanizing, cold-dip galvanizing coatings are mainly anti-corrosion based on electrochemical principles. Therefore, it is necessary to ensure sufficient contact between zinc powder and steel to produce electrode potential difference, so the surface treatment of steel is very important.