What is the difference between square tube and rectangular tube?

What is the difference between square tube and rectangular tube？

1. Different cross-sections:The cross-section of a Square Tube is square; The cross-section of arectangular tube is rectangular.

2. Different uses:

The uses of square tubesinclude construction, machinery manufacturing, Steel Construction projects, shipbuilding, solar power brackets, steel structure engineering, power engineering, power plants, agricultural and chemical machinery, glass curtain walls, automotive chassis, airports, boiler construction, highway railings, housing construction, pressure vessels, oil storage tanks, bridges, and power station equipment.

Advantages of square tube

(1) Good cross-sectional characteristics: Compared with wide flange H-beams and circular steel pipes of the same weight or cross-sectional height, the bending stiffness of square pipes in both main axis directions is 1.3 times that of circular steel pipes, approaching the bending stiffness of H-beams in the strong axis direction and twice that in the weak axis direction The turning radius is 17 times and 6 times. The strong bending stiffness not only significantly improves the bending capacity, but also is more suitable for the conditions of inter node load or secondary bending moment of truss members; A larger rotation radius is more conducive to ensuring; Ensure the overall stability of the rod and improve the bearing capacity of the compression rod; Meanwhile, a higher stiffness is also very beneficial for ensuring the transportation of the truss The overall lifting is stable.

(2) Good corrosion resistance: At the same length, the pipe end is in a single-sided corrosion state after being closed during use, so not only can the painting and maintenance workload be reduced by about 1/3, but the corrosion resistance life can also be twice that of H-beam.

(3) Reduce engineering costs: Use square rectangular pipes for cold bending welding to avoid complex box line processing technology, simplify construction, improve work efficiency, and reduce costs.

The use of rectangular pipes: widely used as pipelines for transporting fluids such as oil, natural gas, water, gas, steam, etc. In addition, when the bending and torsional strength is the same, the weight is relatively light, so it is also widely used in the manufacture of mechanical parts and engineering structures. It is also commonly used for producing various conventional weapons, barrels, shells, etc.

3. The scope of coverage is different: square tube is a type of rectangular tube, which is included in the rectangular tube.
There are two main production methods for rectangular tubes, namely cold rolling and hot rolling. Hot rolling of rectangular tubes is made by processing hot-rolled strip steel into coils. Cold drawn or cold-rolled precision rectangular tubes are used for mechanical structures and hydraulic equipment with high dimensional accuracy and good surface smoothness.
Rectangular pipes and square pipes are collectively referred to as rectangular pipes, but there are still certain differences between the two. Rectangular pipes have unequal side lengths and a rectangular cross-section; The four side lengths of square pipes are equal, and their cross-section is square. In addition, there are also differences in their size specifications. Compared with square pipes, rectangular pipes are better able to withstand bending moments or torques, while square pipes are more suitable for withstanding shear forces. Choose the appropriate one according to your needs. Let's take a look at the difference between rectangular tubes and square tubes. 1、 Is a rectangular pipe a rectangular pipe
Square rectangular pipe is a general term for square and rectangular pipes. Rectangular pipe is a type of square pipe, also known as rectangular pipe, flat pipe, or square flat pipe.

2、 What is the difference between rectangular tube and square tube
Rectangular tubes and square tubes are both called rectangular tubes, but there are still some differences between them. What is the difference between rectangular tubes and square tubes?
In fact, square tube is also a type of rectangular tube. Generally, four pairs with equal side lengths are square tubes, while only two pairs with equal side lengths and adjacent pairs with unequal side lengths are rectangular tubes. It is also very simple to distinguish between square and rectangular pipes. Look at the cross-section of the steel pipe.

If the cross-section is square, it is the steel pipe, and if the cross-section is rectangular, it is the rectangular pipe.
In addition, due to their different shapes, square and rectangular pipes also have certain differences in size specifications.
The bending section coefficient (polar moment of inertia) of rectangular pipes is relatively large, and they can better withstand bending moments or torques compared to square pipes; Square pipes have a larger cross-sectional area than rectangular pipes. If you need to withstand shear forces, it is better to use square pipes. When choosing, you can choose according to the needs of the usage site.