How to test Minimum Bending Radius of hose tube?

Bend radius is the minimum radius a pipe, tube, or hose can bend without damaging it (including kinking). The smaller the radius , the greater is the flexibility of the material. The minimum bend radius is the radius below which an object should not be bent. **1,**Minimum Bending Radius of PVC Spiral Suction Hose Testing like below: **2,**Minimum Bending Radius of Hydraulic Rubber Hose Testing like below: Tube Bend Radius Always. Sunhose PVC Steel Wire Suction Hose, PVC Spiral Suction Hose, Rubber Suction Hose, Hydraulic Rubber Hose can be tested the Minimum Bending Radius.