1. The bending fatigue test of the steel mesh skeleton composite pipe is to fix one end of it on the motor flange or shaft, and connect the other end with the looper flange or flexible shaft head. It rotates with a small bending radius. The flexible section and net sleeve of the whole product are subject to alternating load. The conditions of this test method are much more rigorous, because any part of the composite pipe in the radial direction cannot avoid the influence of large tensile stress and compressive stress. In this test, the cavity is usually unloaded, and the linear speed of rotation V ≤ 6 m/min.

2. Under the premise of maintaining the working pressure, one end of the product is fixed, and the other end is repeatedly bent according to the small bending radius under the action of the crank, connecting rod and sliding block (or oil cylinder and piston). The steel mesh skeleton composite pipe with a drift diameter less than 100mm has a frequency of 2 weeks/minute.

Hainan steel mesh skeleton pipe