The reliability of the compensator is composed of various aspects such as design, manufacture, installation and operation management. Reliability should also be considered from these aspects. Material selection For the selection of bellows for heating pipe network, in addition to the working medium, working temperature and external environment, the possibility of stress corrosion, the effect of water treatment agent and pipe cleaning agent on the material should be considered. On the basis of this, combined with the welding, forming of the bellows material and the performance and price ratio of the material, an economical and practical bellows making material is preferred. Under normal circumstances, the material selected for the bellows should meet the following conditions: (1) High elastic limit, tensile strength and fatigue strength to ensure the normal operation of the bellows. (2) Good plasticity, easy to process the bellows, and can be obtained by subsequent treatment processes (cold work hardening, heat treatment, etc.) Hardness and strength. (3) Good corrosion resistance and meet the requirements of bellows in different environments. (4) Good welding performance to meet the welding process requirements of the bellows during the manufacturing process. For the heat pipe network laid in the trench, when the pipeline where the compensator is located is low, the rainwater or accidental sewage will be soaked in the bellows. More corrosion resistant materials such as iron-nickel alloys and high-nickel alloys. Due to the high price of such materials, it is conceivable to add a layer of corrosion resistant alloy only on the surface in contact with corrosive media when manufacturing bellows. Fatigue life design can be seen from the failure type and cause analysis of the bellows compensator. The plane stability, circumferential stability and corrosion resistance of the bellows The corrosion performance is related to the displacement amount, that is, the fatigue life. Too low fatigue life will result in a decrease in the stability and corrosion resistance of the metal bellows. H7 Led Headlight,H7 Bulb,H7 Headlight Bulb,H7 Led Lights CHANGZHOU CLD AUTO ELECTRICAL CO.,LTD , https://www.cld-led.com