What does the rectangular tube look like?

Rectangular tube, that is, rectangular tube, also known as the flat tube, flat square tube, or square flat tube, is lighter in weight when the bending strength and torsional strength are the same, so it is widely used in the manufacture of mechanical parts and engineering structures; there are two types of pipes produced Main methods: cold rolling and hot rolling;

The cold-drawn rectangular tube uses a hot-rolled coil as the starting material. When used, it is first absorbed by the acid and the scale mentioned above, then cold-rolled, thereby improving the hardness and strength of the cold-rolled steel tube, but the toughness will be reduced. Slight decline; hot-rolled rectangular tubes, continuous casting slabs, and blooms are used as raw materials, and then passed through a heating furnace, even if high-pressure water is used, the surface phosphorus will be removed, and then, used on the rectangular tubes at the head and tail of the roughing mill, which is then used in the pipeline, is then fed into the finishing mill for computer-controlled precision rolling, where the square tube is laminarly cooled, rolled by a coiler, and then crimped.

Rectangular tubes are widely used as pipelines for conveying fluids, such as oil, natural gas, water, gas, steam, etc. In addition, they are lighter in weight when they have the same bending and torsional strength, so they are also widely used in the manufacture of mechanical parts and engineering structures, and are also commonly used to produce various conventional weapons, barrels, shells, etc.; square tubes are often used in various building structures and engineering structures, such as beams, bridges, transmission towers, lifting and transportation machinery, ships, industrial furnaces, reaction towers, Construction steel such as container racks and warehouse shelves - square tubes play a very important role in the construction industry.