Fatigue life design of bellows compensator failure types and causes of analysis can be seen that the plane stability of bellows, circumferential stability and corrosion resistance are related to its displacement namely fatigue life. The fatigue life of low will lead to bellows stability and corrosion resistant performance. According to the test and use of the experience, the fatigue life of bellows used in heating engineering should not less than 1000 times.
　　Bellows can't bearing, should separate lifting; In addition to the design requirements for pre-stretching or cold tight pre deformation, it is forbidden to use the corrugated pipe deformation of pipe method to adjust the deviation; The installation process does not allow welding slag splash to the surface of the corrugated pipe and other mechanical damage; Corrugated pipe all active components shall be stuck or external components limit their activities at work.
　　Most of the corrugated pipe failure was caused by external environment corrosion, so the structure design of the compensator, can consider to cut off contact with the corrugated pipe external corrosion medium. Type such as for the finale to the compensator in the outlet ring packing seal device with increased between the outlet pipe, its function is equivalent to the sleeve compensator, can resist the invasion of external corrosion medium, and added a safety barrier to bellows compensator, even if the bellows, compensator can also play a role of compensation and to avoid corrugated pipe failure.
　　Compensator and non-metallic compensator, metal compensator and according to different medium use, also can divide professional anti-corrosion compensator and resistance to high temperature compensator.