is a hollow square cross-section steel pipe with a square cross-section shape and size made from hot-rolled or cold-rolled galvanized strip steel or galvanized coil plate, which is formed by cold bending and then high-frequency welding. , or galvanized square rectangular pipes made by hot-dip galvanizing the pre-made cold-formed hollow steel pipes.
Hot-dip galvanized square tube: It is a square tube made by welding a steel plate or steel strip after being curled and formed. On the basis of this square tube, the square tube is placed in a hot-dip galvanizing pool and undergoes a series of chemical reactions. A square tube formed. The production process of hot-dip galvanized square tubes is relatively simple, the production efficiency is very high, and there are many varieties and specifications. This kind of square tubes requires very little equipment and funds, and is suitable for the production of small galvanized square tube manufacturers. However, in terms of strength, the strength of this steel pipe is far lower than that of seamless square pipes.
