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China Stainless Steel Metallic Bellows Expansion Joints - Leading Suppliers & Factory for Corrugated Compensators
Metal Expansion Joints also called metal corrugated compensator, it composed by metal bellows and accessories such as end pipe, support, flange and conduit. Metal expansion joints can be used to absorb the dimensional changes of pipelines, conduits and containers caused by thermal expansion and cold contraction, or to compensate the axial, transverse and angular displacement of pipelines, conduits and containers. It also can be used for noise reduction and vibration reduction.
Functions
- Compensate the axial, lateral and angular thermal deformation of the absorption pipeline.
- The expansion and contraction of the corrugated compensator is convenient for the installation and disassembly of the pipeline.
- Absorb equipment vibration and reduce the impact of equipment vibration on the pipeline.
- Absorb the deformation of the pipeline caused by the earthquake and ground subsidence.
Applications
Acid, alkali, corrosion, oil, hot water, cold water, compressed air, compressed weather, flue gas pipeline, pulverized coal pipeline, desulfurization pipeline, etc.
Installation
- 1 The type, specification and pipeline configuration of the metal expansion joints should be checked before installation, and it must meet the design requirements.
- 2 For expansion joints which with inner sleeves, care should be taken to ensure that the direction of the inner sleeve is consistent with the flow direction of the medium, and the hinge rotation plane of the hinge-type compensator should be consistent with the displacement plane.
- 3 The expansion joints which need to be "cold-tightened", and auxiliary components used for pre-deformation should be removed after the pipeline is installed.
- 4 Strictly prohibited to use deforming the corrugated compensator to adjust the installation tolerance of the pipeline, avoid to affect the normal function of the compensator, or will reduce the service life and increase the load of the piping system, equipment and supporting components.
Frequently Asked Questions
What is a metal expansion joint?
A metal expansion joint, also known as a metal corrugated compensator, is a device composed of metal bellows and components like end pipes, supports, flanges, and conduits. It is designed to absorb dimensional changes in pipelines and containers caused by thermal expansion, contraction, or displacement.
What are the primary functions of metal expansion joints?
They are used to compensate for axial, lateral, and angular thermal deformation in pipelines. They also facilitate pipeline installation and disassembly, reduce the impact of equipment vibration, and absorb displacement caused by earthquakes or ground subsidence.
Where are metal expansion joints typically applied?
These joints are widely used in specialized pipeline systems carrying acid, alkali, oil, hot/cold water, compressed air, flue gas, pulverized coal, and in desulfurization pipelines, among other corrosive or high-temperature environments.
What precautions should be taken regarding flow direction during installation?
For joints equipped with inner sleeves, you must ensure that the direction of the inner sleeve aligns with the flow direction of the medium. Additionally, the hinge rotation plane of hinge-type compensators must align with the displacement plane.
Can I deform the corrugated compensator to fix pipeline alignment issues?
No, it is strictly prohibited to deform the compensator to adjust for installation tolerances. Doing so can seriously impair its function, shorten its service life, and increase the stress load on the entire piping system and connected equipment.