Changsha Xiangjia Metal Materical Co., Ltd.

What are the effects of material elements on the performance of  steel square tube ? (1) Carbon: the higher the carbon content, the higher the hardness of the steel, but the poorer its plasticity and toughness. Therefore, the carbon element affects the hardness and toughness of steel square tubes. (2) Sulfur: it is a harmful impurity in steel. Steel with a relatively high sulfur content is prone to brittle fracture when pressure processed at high temperatures, which is usually called hot brittleness. Sulfur is a weight index reflecting the brittle fracture performance of square tubes. (3) Phosphorus: it can significantly reduce the plasticity and toughness of square tube steel, especially in low temperatures, and it's called cold brittleness. In high-quality steel, sulfur and phosphorus should be strictly controlled. But on the other hand, in low-carbon steel square tubes with relatively high sulfur and phosphorus, it can make the cutting easy to break, which is beneficial to impro...

Square and rectangular tubes   are a kind of name for square-shaped pipes and rectangular-shaped pipes, that is, steel pipes with equal side lengths. They are made by rolling strip steel through technological processing. Generally, the strip steel is unpacked, flattened, curled, and welded to form a round pipe, and then the round pipe is rolled into a square pipe and then cut to the required length. The following content is mainly about the corresponding uses sorted out by Xiangjia Steel for everyone, hoping they are helped. Mine-used fluid-transporting welded square and rectangular tubes, with the standard number of GB/T14291-2000. The representative materials are Q235A and B-grade steel, mainly used for straight seam welded square and rectangular tubes for mine ventilation, drainage, and axial gas drainage; Galvanized welded square tubes for low-pressure fluid transportation, with the standard number of GB/T3091-2008. The representative materials are Q235A, Q235B, Q345B, etc. Ma...

1. Calculate the compressive stress, which is the compressive stress generated by the vertical pressure acting on the cross section of the   rectangular tube . The pressure (in N) divided by the cross-sectional area of the rectangular tube (in m squared). As long as the compressive stress is less than the allowable stress of the material. 2. The stability must be calculated when the square tube is under pressure. It depends on whether the connection method is fixed at both ends or fixed at one end and hinged at the other end. Simple calculation of critical pressure: P=(4*n*Pi^2*E*I)/[(L/2)^2]. The number of n columns, pi^2 is the second power of the shot, E modulus of elasticity, I moment of inertia, and L column length. They are simple calculations. Safety factors and seismic loads also should be considered. You need to analyze it in different specific situation and look for professional advise. Changsha Xiangjia Metal Materical Co., Ltd.  the Steel Pipe Division of ADTO GROU...

Right-angle square tube   is a kind of special square tube, which is different from ordinary arc square tube for its R angle is close to 0. It is a square tube rolled from a round tube. Right-angled square tube whose R angle is not more than 1 times of the wall thickness. Right-angle square tube: when the wall thickness＜3mm, the R angle is＜1mm; When the wall thickness is 3-8mm, the R angle is＜2mm; When the wall thickness is＞8mm, the R angle is ＜ 3mm, which is a sharp rectangular tube. Classify according to the cross-sectional shape , square right-angled square tube and rectangular right-angled square tube.

Bearing pressure calculation formula for precision bright   square tube 1. The calculation method for the wall thickness of the precision bright square tube to withstand the pressure (different materials of the precision bright square tube has different tensile strength) pressure = (wall thickness * 2 * steel tube material tensile strength) / (outer diameter * coefficient) 2. The calculation method for calculating the wall thickness of the precision bright square tube outer diameter and pressure: 　　 Wall thickness=(pressure*outer diameter*factor)/(2*steel tube material tensile strength) 3. The calculation method of the pressure coefficient of precision bright square tube: 　　  pressure P<7Mpa    coefficient S=8 　　7<pipe pressure P<17.5Mpa     coefficient S=6 　　 pressure P>17.5Mpa      coefficient S=4