The stainless steel bellows is installed in the liquid conveying system as a flexible pressure-resistant pipe fitting to compensate the mutual displacement of the connecting end of the pipe or machine and equipment, absorb the vibration energy, and can play the role of vibration reduction, noise reduction, etc., with good flexibility and light weight. , corrosion resistance, anti-fatigue, high temperature resistance and many other characteristics. The value of the metal bellows stiffness required to produce a unit displacement of a metal bellows or other elastic element is referred to as the stiffness of the element and is generally indicated by a .

If the elastic properties of the element are non-linear, the stiffness is no longer constant, but varies as the load increases. The stiffness given by the design of the nominal stiffness elastic element is called the nominal (or rated) stiffness. It has errors with the measured stiffness of the component, especially elastic components with nonlinear elastic properties. The nominal stiffness represents the stiffness of the point on the curve and should be carefully considered. In general, the nominal stiffness is best not to use the design calculations directly, but rather to use the corrected values ​​of the prototype after testing.

Stiffness tolerance The range of dispersion allowed for stiffness when testing a batch of elastic components. For the same batch of elastic components, the rigidity of each component of the stainless steel metal hose is not the same, and there is a dispersion range. In order to ensure the performance of the components, it is necessary to have a limit on the range of stiffness dispersion. For elastic sensitive components, the stiffness tolerance requirement is limited to of the nominal value; for general engineering bellows-like elastic components, the stiffness tolerance can be limited to .

The stainless steel bellows is installed in the liquid conveying system as a flexible pressure-resistant pipe fitting to compensate the mutual displacement of the connecting end of the pipe or machine and equipment, absorb the vibration energy, and can play the role of vibration reduction, noise reduction, with good flexibility and light weight, corrosion resistance, anti-fatigue, high temperature resistance and many other characteristics.Axial type, common axial type, angular type, single hinge type, with support axial type, external pressure axial type, single direction type, horizontal type, single type tie rod type, pressure balance type, single Straight pipe pressure balance type, double straight pipe pressure balance type, double tie rod type, single type elbow pressure balance type, double type compared with chain type, single type elbow pressure balance type.