Generally speaking, square tubes are square tubes. The first difference between square tubes and steel tubes is that one is round and the other is square. They can be made of many materials. Square tubes made of different materials have different uses. The manufacturing processes of square tubes and circular tubes are similar, which are formed by unpacking, flattening, curling, and welding, Then cut different lengths as required. Square tubes can be divided into structural square tubes, decoration square tubes, construction square tubes, mechanical square tubes, etc.

Square tube is a kind of cold-formed steel with square section, which is made of Q235 hot-rolled or cold-rolled strip or coil as the base material through cold bending processing and then high-frequency welding. In addition to wall thickening, the corner standard and edge straightness of hot-rolled extra thick wall square tubes reach or even exceed the level of resistance welded cold formed square tubes. The price of square pipe is mainly based on the price of steel and the manufacturing process. Different materials and manufacturing processes have different prices, and the price is also affected by many factors, so the price of pipe work is often changed.

At present, square tube is widely used as an indispensable material for national construction. It is mainly used in a large number of industrial and mechanical products, such as construction, machinery manufacturing, shipbuilding, power generation, automobile, etc., but its main use is still reflected in the construction work.