Axial expansion joints are used to absorb the thermal expansion along the axis of the pipe. Piping system in itself divided into various expansion sections are isolated by means of fixed points. Thus, the movements in the individual expanding sections, are absorbed by the axial expansion joints in this section. Axial expansion compensators, Although it is manufactured in standard 30 and 60mm expansion values ​​for the desired expansion in various other custom designs are possible. Liner material is used as an option, disconnect the connection between the fluid flow smoothness and bellows in order to give kullanılmakatır. Depending on the temperature and pressure of the fluid used in the bellows material, wall thickness and number of coats are designed.