The main differences between rectangular tubes and square tubes are as follows:

The main differences between rectangular tubes and square tubes are as follows:

The cross-sectional shapes are different. The cross-section of a rectangular tube is a rectangular shape with four right angles around it; the cross-section of a square tube is a square shape with four sides of equal length.
The production process is different. Rectangular tubes are generally manufactured by hot rolling, cold drawing or welding, and are suitable for occasions that require transverse bending resistance, such as construction, machinery manufacturing, etc.; the production process of square tubes is relatively simple, including hot rolling, cold rolling, cold rolling, etc. Drawn or hot-dip galvanized, etc., often used in light structural parts, such as doors, windows, chimneys, bridges, etc.
Application fields are different. Rectangular tubes are suitable for occasions with high requirements on strength and stiffness, such as building structures, bridges, vehicle manufacturing, etc.; square tubes are more used in furniture manufacturing, decorative materials, fences and other fields.
When selecting rectangular or square tubes, appropriate specifications, materials and precision levels should be selected according to specific uses and requirements, while paying attention to the thickness and length of the tube wall to ensure sufficient strength and stability.