how to bend square tube？

1. Preparation work: Confirm the material and size of the square tube, as well as the radius and bending angle of the arc that needs to be made.

2. Mold making: Create a suitable wooden or metal mold based on the radius and bending angle of the arc.

3. Heating square tube: Place the square tube into a dedicated heating device and heat it to a certain temperature to soften the square tube material. The heating temperature should be determined according to the properties of the material, usually between 500-800 degrees Celsius.

4. Bending square tube: Quickly place the heated square tube into the prepared mold and apply force to bend it into the desired circular arc shape. Be careful during the operation to prevent burns or other accidents.

5. Cooling square tube: Place the bent square tube in air for natural cooling to restore its original hardness and shape.

6. Processing and Cleaning: For curved square tubes that require further processing, processes such as grinding, polishing, and painting can be carried out to obtain a smoother and more aesthetically pleasing surface.

It should be noted that when bending the circular arc of the square tube, the heating time and temperature should be reasonably controlled according to the strength and bending radius of the material to avoid excessive softening or damage to the material. In addition, safety should be taken into account during the operation process, and appropriate protective equipment and tools should be used to avoid accidents. It is best to operate under the guidance of professional processing plants or experienced personnel to ensure quality and effectiveness.