Hinge compensator (expansion joints, expansion joints, bellows, expansion joints) a hinge bellows in the installation should be preceded by checking their models, specifications and piping configuration must meet the design requirements. 2, with the inner sleeve of compensation shall take care that is consistent with the medium flow direction of the inner sleeve sub hinge compensator hinge-type rotation plane should be consistent with the displacement of the plane of rotation. 3, the need for "cold tight" compensation, auxiliary components used in the pre-deformed pipes should be installed only after the removal of 4, the installation is prohibited by bellows deformation method to adjust the pipeline ultra-poor, so as not to affect the compensator normal function, reduce the life of that increase piping, equipment, and support to build the load. 5, the installation process is not allowed to slag splashing waves shell surface, allowed to wave shell by other mechanical damage. 6, the tube should be removed after the installation system for installation on the transport of bellows yellow secondary positioning member and fasteners as soon as possible, according to the design requirements will be transferred to a predetermined position limit device, the tube system at ambient adequate ability to compensate. 7, the compensation components of all activities shall be external member stuck or limit its scope of activities, should ensure the normal operation of all moving parts. 8, hydrostatic testing, response times fixed pipe rack mounted compensator reinforce the ends of the pipe so that the pipe does not occur to move or rotate. The need for additional temporary support to compensate for the gas medium and its connecting piping, pay attention to when full of water. Hydrostatic test water cleaning solution 96 chloride ion content of no more than 25PPM. 9, after the end of the test pressure shall discharge wave shell in the water as soon as possible, and quickly dry surface wave shell. 10, insulation materials in contact with compensator bellows should not contain chlorine.