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Stainless steel corrugated compensator is also called stainless steel bellows, stainless steel expansion joint . It consists of bellows (an elastic component, generally made of stainless steel 304 or stainless steel 316L) and end pipes, brackets, flanges, conduits, etc., which constitute the main body of the work. The stainless steel corrugated compensator belongs to a compensating component, which mainly utilizes the effective telescopic deformation of the corrugated pipe of the working body to absorb dimensional changes caused by thermal expansion and contraction of pipelines, pipes, containers, etc., or to compensate pipelines, conduits, and containers. The axial, lateral and angular displacements of the device can also be used for noise reduction and vibration reduction of various equipment pipes, and are widely used in modern industries.

Flange connection stainless steel bellow expansion joint

Flange connection stainless steel bellow expansion joint

  • Flange connection stainless steel bellow expansion joint
  • Flange connection stainless steel bellow expansion joint
  • Flange connection stainless steel bellow expansion joint
Production details of bellow expansion joint

Detail description of stainless steel bellow expansion joint

Features and functions of stainless steel bellow expansion joint :


1. The stainless steel bellow expansion joint has a telescopic amount to facilitate the installation and disassembly of the valve pipe.


2. Compensation for axial, lateral and angular thermal deformation of the absorption pipe.


3. Absorb the amount of deformation of the pipeline caused by earthquakes and subsidence.


4. Absorb equipment vibration to reduce the impact of equipment vibration on the pipeline.


Note: Stainless steel bellow expansion joint is mainly used to compensate axial displacement. It can also compensate for lateral displacement or axial and lateral synthetic displacement. It has the ability to compensate angular displacement, but it is generally not used to compensate angular displacement.

Stainless steel bellow expansion joint expands knowledge

Failure analysis of stainless steel bellow expansion joint : 


The analysis of the failure reasons of the bellow expansion joint by the production enterprise found that the failure during operation mainly manifested in two forms of corrosion leakage and instability deformation, among which corrosion failure was mostly. Anatomical analysis of corrosive failure bellows expansion joint found that corrosion failure is usually divided into corrosion perforation and stress corrosion cracking, in which chloride stress corrosion cracking accounts for about 95% of the total corrosion failure. Therefore, the correct selection of materials and structures for corrugated pipe, reasonable design of waveform parameters and fatigue life, and assurance of installation quality can greatly improve the safety and reliability of the bellows expansion joint . In design, the stability of the expansion joint should be considered to prevent the instability of the bellows. The compensation amount of the bellows depends on its fatigue life, and the higher the fatigue life, the smaller the single wave compensation amount of the bellows.


MAIN DATA

Parameters of stainless steel bellow expansion joint:

Diameter  DNLength(mm)wavesPressure rating MPaBellowe effective areas (cm2)Outer diameter size Max (mm)



0.611.6




Axial displacement mm/ stiffness N/mm

504321041/23139/25537/28681270
6542082/11678/12674/143
654881041/23139/25537/28682290
7562082/11678/12674/143
80506956/19653/23250/278121308
7891811/298106/116100/139
100532861/16757/21854/256180336
78916122/84114/109108/128
125616882/27878/30175/320257368
96616164/129156/151150/160
1509508124/125112/15489/330535450
154016250/56210/87160/113
2009508130/155100/12670/409779505
155016250/75200/113160/205
25010808161/111130/162105/3781075566
180016320/50260/94201/119
30010908161/138130/194100/3381269600
182016320/54260/100200/168
35010908165/165132/22199/4381619676
182016320/71250/121200/218
40011108162/164132/290101/4682008710
184016310/76251/145190/268
45011108152/131132/339100/5322428768
184016301/81251/170190/245
50014756190/180150/515150/7653473975
245012371/90300/175300/298
60015406195/231150/154140/76547661090
254012391/121290/364280/480
70015406200/222155/601150/83260681190
254012400/112300/400290/478
80015406201/200164/497150/89775281290
254012400/135321/451299/583
90016056220/206230/635220/76593281460
268512430/154460/337442/388
100016056220/356230/615220/763111181560
268512430/268460/303442/418
110016056210/273230/654221/754130661660
268512428/187460/347442/414
120016056210/308230/757221/832151701760
268512420/104460/488443/601
130016056220/356230/864221/864174321860
268512410/132450/432435/626
140016056212/398231/645226/889198511960
268512410/198450/466430/665
150016056201/321230/978220/984224272060
268512400/187449/422432/665

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