What are the differences between round stainless steel tubes and square tubes

Round stainless steel tubes and square tubes are very common in life. Whether it is a national standard part or a non-standard part, the amount of stainless steel used in these two shapes is comparable. There are still differences between round stainless steel tubes and square tubes, and it is not just the difference in cross-section. Today, I will tell you in detail what the differences are between round stainless steel tubes and square tubes.

1. Production difference: The round tube is extruded into a round shape using a stainless steel strip and then welded online. The square tube is first made into a round tube and then extruded into a square tube through a mold. The square tube has one more process, so the price will be a little more expensive.

2. The difference in tube wall process: Most of the outer walls of stainless steel round tubes are polished, while square tubes are brushed. This is because the four corners of the square tube are not easy to polish, and the square tube is more likely to be scratched, so brushing can reduce the presence of scratches. To prevent slipping, the surface of some round tubes will also be made into a frosted effect, and the particle size can be adjusted. The inner wall of the round tube can be polished, and the brightness is relatively uniform. Stainless steel square tubes cannot be polished due to internal structural problems, especially since the four corners are difficult to polish, and even if polished, they are not uniform enough.

3. Difference in pipe mouth process: The pipe mouth of the round tube can be processed by shrinking, expanding, shrinking, reducing diameter, curling, chamfering, etc., but the square tube cannot be processed.

4. Difference in quality control: The roundness of stainless steel round tubes is difficult to control during production and storage, and the tube body often sags and the pipe mouth deforms, especially the steel tubes with relatively small wall thickness. The four sides of the square tube are prone to indentation and the R angle is difficult to control. This is caused by the poor precision of the mold and the lack of experience of the operator.

5. Difference in structural force: The surface force of the round tube is more uniform; the stainless steel square tube has four 90-degree corners, which are not easy to rotate and twist, and are more secure when fixing certain objects. In home furnishings such as our doors and anti-theft windows, square tubes are generally used as frames, and round tubes are used as linings. The combination makes the items both firm and resistant to external impact.

6. Difference in usage: In many cases, square tubes and bent tubes can replace each other, but it is different in certain cases. Due to the structure of stainless steel round tubes and the polishable inner wall, the tube wall is not easy to scale and is easy to clean, so it is the first choice for fluid transportation; the inside of square tubes is prone to scale accumulation and inconvenient to clean, so they are generally not used for fluid transportation. Since the resistance moment of square tubes is greater than that of round tubes, they will be more solid, so when used as structural support, square tubes will be used as the main component.

What are the differences between stainless steel round tubes and square tubes? Different production methods lead to different prices, and different tube wall processes and structural forces lead to different applications. In many cases, stainless steel round tubes and square tubes are used together, each with its advantages. You can refer to the above summary when purchasing.