The bending radius refers to the small radius required for titanium coil tubes to be bent in order to prevent cracks, deformation, or damage during the bending process. In the application of titanium coils, the selection of bending radius is important because it directly affects the service life and safety of titanium coils.

Usually, the bending radius of titanium coils cannot be less than three times the pipe diameter. For larger pipe diameters, the bending radius may be larger. In addition, the bending radius is also influenced by other factors, such as the wall thickness and bending angle of the pipe. When selecting the bending radius, it is necessary to comprehensively consider these factors to ensure that the titanium coil will not be damaged during the bending process.

In practice, the bending radius is usually determined through experimentation. When conducting bending tests, it is necessary to place the titanium coil on an adjustable bending device, gradually increasing the bending angle and radius until it cracks or deforms. By observing the experimental results, it can be determined that its large allowable bending radius.

In addition, in order to ensure the safety of titanium coils during the bending process, other aspects such as bending angle, bending speed, cooling method, etc. need to be tested and controlled. These factors need to be comprehensively considered based on the specific titanium coil material, specifications, and usage environment.