The cross-sectional shape of square tubes is more stable and is suitable for scenes that need to withstand large vertical loads. They also have advantages in situations that need to resist shear forces because their cross-sectional areas are usually larger than rectangular tubes and can better disperse shear forces. The production of square tubes is relatively simple and has a wide range of applications.
Rectangular tube:
Rectangular tubes have higher bending strength and stability, which makes them more suitable for situations where they carry large loads or need to resist bending moments and torques. The structural design of rectangular tubes generally handles shear and bending stresses better, making them a better choice in applications where large horizontal or bending forces are required.
Comparison of bending strength of rectangular tube and square tube:
Comparison of compressive strength of rectangular tube and square tube:
Selection principles and recommendations:
1. When selecting square or rectangular tubes, the actual needs and specific application conditions should be considered, and factors such as strength, hardness, corrosion resistance, cost, etc. should be considered comprehensively.
2. If you need to withstand large horizontal force or bending force, you should choose rectangular tube because it has high stiffness and bending resistance.
3. If you need to bear a large amount of vertical load, you should choose square tube because its cross-sectional shape is more stable and easy to connect.
4. In some application scenarios, square tubes and rectangular tubes can also be used in combination to achieve better load-bearing effects.
Conclusion:
The load-bearing capacity of rectangular tubes is generally better than that of square tubes. The strength performance of rectangular tubes and square tubes varies under different forces. The bending strength of rectangular tubes of the same material and size is higher than that of square tubes, but under compressive load, the strength difference between rectangular tubes and square tubes is not significant. When selecting steel pipes, practical application needs and design requirements should be comprehensively considered, and steel pipes of appropriate materials and cross-sectional shapes should be selected.
Tips: ASTM A500 is a standard specification for cold-formed welded and seamless carbon steel structural tubing in round, square tube and rectangular tube shapes.
ASTM A500 steel pipes can be subjected to most of the usual fabricating operations. Ductility is good. It bends well, flattens, cuts, punches, flares and flanges easily, and can be welded by the commonly-used techniques and practices.