Square tube vs Round tube: Which is better?

What is a square tube?
Square tube is a square polygonal tube with regular shape and structure, which is easy to cut and convenient to transport and connect. The advantages of square tubes are not only their appearance, but also their long service life, corrosion resistance, high strength, and good weldability. They can also be processed and processed according to different requirements. Therefore, square tubes have wide application value in installing urban sculptures, building structures, road guardrails, etc.

What is a round tube?

Round tube is a steel tube with a circular cross-section. It has a regular structure and is more suitable for bending, folding and other processing methods. It is also relatively strong and not easily damaged. The round pipe has high pressure resistance, long service life, good corrosion resistance and waterproof performance, and is also more beautiful in appearance. Therefore, round pipes are also widely used in fields such as building structures, mechanical processing, and oil field development.

Advantages and disadvantages of square tube:
1. Advantages: Square tubes have high strength and good rigidity, and can withstand large pressure and weight and are not easily deformed, making them more suitable in some situations that require load-bearing. Moreover, square tubes are generally square or rectangular (rectangular tube), which is conducive to overlapping and connection during installation, and is more convenient to install.

2. Disadvantages: Compared with round tubes, the stress-bearing surface of square tubes is relatively small, and the bearing capacity has certain limitations. In addition, its performance in bending and torsion is poor, and it is prone to problems such as deformation and cracking.

Advantages and disadvantages of round tubes:
1. Advantages: The force-bearing area of the round pipe is relatively large, and it can evenly distribute the load and make bends. When subjected to large pressure and weight, round tubes have better resistance to deformation and are more suitable for bending processing.

2. Disadvantages: Due to the small connection area of the round pipe, the bearing capacity will be attenuated and deformed after a period of use, and the connection points of the pipe need to be strengthened. In addition, due to the influence of the edge angle during installation, the connection is prone to cracks and is difficult to connect, and non-destructive testing is required to ensure the connection quality.

Application scenarios of square tubes and round tubes:
From the above advantages and disadvantages, it can be seen that the advantages and disadvantages of square tubes and round tubes are offset, and the scenarios in which they are used are also different. Generally speaking, square tubes are more suitable for use in building structures and vehicle manufacturing that require vertical load-bearing; round tubes are more suitable for use in bending and bending places, such as furniture manufacturing, machinery manufacturing, etc.

Therefore, when selecting pipe materials, you should comprehensively consider square pipes and round pipes based on specific usage scenarios and requirements, and choose pipe materials that are more suitable for your own use requirements. In addition, we also need to pay attention to the standards and specifications for material selection and ensure that the selected pipes meet the relevant standards and specifications to ensure the use effect.

Go here to learn more: ASTM A500 square tube