As you can see from the video, this is a small factory. The workers are already too old.
From the control button, you can know whether the controller of the profile bending machine is the old model in the BIT series machine (the new model uses the joystick design).
There is no mathematical formula to determine the minimum bending radius of steel sections.
To explain this better, let’s look at steel bending. The steel is bent using a cold rolling bending process.