Introduction of square tube
As the name implies, square tube is a kind of square tube, and many kinds of materials can form a square tube. What is its medium, what is it used for, and where is it used? Most square pipes are steel pipes, which are unpacked, flattened, curled and welded into round pipes, then rolled into square pipes, and then cut into required lengths. Generally, 50 square tubes per package are mostly large in size from the spot, ranging from10 *10 * 0.8-1.5 ~ 500 * 500 *10-25. Square pipes are divided into structural square pipes, decorative square pipes, architectural square pipes and mechanical square pipes according to their uses.
Square pipe is a name of square pipe, that is, steel pipe with equal side length. It is made by rolling strip steel after technological treatment.
It is changed to square tube drawing: generally, the strip steel is unpacked, flattened, curled and welded into a round tube, then rolled into a square tube, and then cut into the required length.
Special use of square pipe
1, square tube product description
Square tube is a kind of light thin-walled steel tube with hollow square section, also known as cold-formed steel. It is made of Q235 hot-rolled or cold-rolled strip or coil as the base material, which is processed by cold bending and then welded by high frequency. In addition to the wall thickness thickening, the corner size and edge flatness of hot-rolled extra-thick-walled square tubes reach or even exceed the level of resistance welding cold-formed square tubes. Good comprehensive mechanical properties, weldability, cold and hot workability and corrosion resistance, and good low temperature toughness.
2. The use of square tube
Square pipes are used for high-load welded structural parts such as construction, machinery manufacturing, steel structure engineering, shipbuilding, solar power generation bracket, steel structure engineering, power engineering, power plant, agricultural and chemical machinery, glass curtain wall, automobile chassis, airport, boiler construction, highway railings, housing construction, pressure vessels, oil storage tanks, bridges, power station equipment, lifting and transportation machinery.
Introduction of square pipe price
Different enterprises may use different raw materials, production equipment and production technology to produce square pipes. Furthermore, these factors are the direct reasons that affect the price of square pipes. In addition, the merchants have their own requirements for the specifications, models and sizes of the other pipe. These will also become the floating factors of the square pipe price.
At present, the price of square pipes with smaller models and specifications is usually kept at 5- 10 yuan/root, while the price of square pipes with higher quality specifications is at 20-50 yuan/root. Usually, square pipes are sold in wholesale mode, because such products are usually used in a large scale. In this way, the square tube price has advantages such as wholesale price.
There are too many square tube products on the market now, and the quality of square tube products launched by different brands and merchants is different. When you buy the square pipe you need, remember not to only care about the price of the square pipe. We must pay more attention to and study the quality and performance of products. We should know that if there is a poor quality square pipe, it will not only affect the whole project and related use effects, but also may cause different safety accidents. Correct selection of square tube makes its performance more beautiful.
Square tube identification method
With the development of economy, there are more and more counterfeit products in society. In order to prevent ourselves from being deceived when buying square pipes, we need to know some knowledge about how to judge the authenticity of square pipes: "We can judge by observing the surface smoothness and flatness of square pipes. If the surface of the square tube is relatively flat, it can reflect that the square tube is good. On the contrary, if the surface is not so flat and the size and thickness are not standardized, it can reflect the inferior quality of the square pipe.
Square tube calculation formula
Calculation formula of square pipe weight: 4* wall thickness * (side length-wall thickness) *0.00785.
Formula for calculating the weight of circular tube: {(circumference ÷3. 14)- wall thickness} * wall thickness *0.02466.
Remarks: the above unit is kg/m, in which the unit of wall thickness and side length is mm, that is, mm.