The JDZ type axial internal pressure bellows compensator, also commonly referred to as a shock-absorbing bellows compensator, bellows, expansion joint, or flexible joint, is composed of the bellows (an elastic element) that constitutes the main working body, along with accessories such as end pipes, brackets, flanges, and conduits. The axial internal pressure bellows compensator is a type of compensating element. The JDZ type axial internal pressure bellows compensator is primarily used for compensating axial displacement and has the capability to compensate angular displacement, although it is generally not used for that purpose.