Several points to pay attention to during the production of square pipes:
As a manufacturer of square tubes, it is necessary to have sufficient control over each process flow of square tubes and the material performance of steel tubes. When customers order welded tubes, square tubes and rectangular tubes are the customers' choice. We have mentioned the advantages and disadvantages of square pipes and rectangular pipes for many times. The size of square pipes only needs to be strict in the consumption process. After all, square pipes are different from rectangular pipes, so we should pay attention to the caliber and pipe end when consuming square pipes, so that we can easily and quickly construct during the installation and welding process. When consuming large diameter steel pipes with thinner wall thickness, pay attention to reinforcement or support the steel pipes to prevent the square pipes from being elliptical or deformed in diameter during transportation. For square pipes, the accurate size of the diameter is important. Secondly, it should be noted that the welded junction of the square pipe should not be undercut, and the two welded edges of the rolled steel pipe should be aligned and leveled, so that the welded steel pipe can be beautiful and standard. Secondly, pay attention to the straightness of the square tube, which not only affects the overall appearance of the square tube, but also affects the later construction welding.
Two forming processes of square tube and rectangular tube:
With the establishment of the domestic economy, especially in the construction industry, the common use of square pipes and rectangular pipes has also increased, and its increased use and performance have also put forward strict demands. As usual, the main consumer manufacturers usually have two ways. The standard of ordinary tube forming process is bending. What is square tube? Torque tube The forming of is usually called bending. This bending method, however, is classified as true bending in the square steel pipe industry, and the other is empty bending.
In fact, needless to say, everyone knows that in the process of bending, the square tube moment contraction produces bending deformation, while the square and rectangular tubes inside and outside, the inner wall of the two-way real pressure state roll, however, according to practitioners, the main advantage of real bending is relatively small elasticity, and is very accurate when forming, Common internal corner molding and more accurate accuracy. However, these two methods have one defect, that is, the bending of rectangular tubes is true today, which can be expanded and contracted, reducing the length and thickness of ordinary stretching. However, in the process of empty bending, it is the compressed line of the bent rectangular tube, and the length of the bent line will be lengthened after it is generated, which will produce thickening effect with empty bending. The advantage of this method is that no wall damage will occur no matter the internal angle is smaller than R bending. The defect is that the forming force will exceed the load due to the upward and downward pressure at the same time, and will affect the use of tube length. However, in the application of theory, try to arrange as much time as possible, and select suitable locations and correct operations in the construction process.
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