Section Bending Rectangular Tube
W24s series section bending machine can bends square hollow sections for structural projects including curved formwork, barrel vaults, roof trusses and bridge rails.
Tips for Bending Steel Tubes:
However, there is some troubleshooting to do when performing steel tube bending.
Bends often require achieving a tight radius. Since the outer wall of the bend becomes thinner, the result may be a distorted bend. To prevent this, using a mandrel to give support is recommended. That is also why press or ram bending is not recommended in these situations. The most adequate bending method would be mandrel bending, which is the same as rotary draw bending, but adding a mandrel to support the inside of the pipe.
Sometimes the radius we need to achieve makes the steel to exceed its elastic limits. It can result in deformation in the form of a hump or wrinkles. To prevent the formation of humps and wrinkles, it is recommended to use rotary draw bending or three roll bending.
When bending stainless steel tubes and pipes, it is important to remember that some of the stainless steels require around 50% more power for bending than carbon steels. Therefore, that the machinery must be set accordingly.
Further reading: The difference between tube and pipe
Related Reading：Similarities Between Bending Round and Rectangular Tubing
Bending Profiles Square Hollow Section
Bending rectangular tubing is a more difficult process than round tube bending (all else being equal: surface area, radius, wall thickness, material type, etc.). As with almost all metal bending processes, the tighter the bend, the more difficult it becomes. Similarly, bending rectangular tubing with thinner walls is more difficult than bending thicker walls (provided the bending machine has the power to curve the thicker sections).