What are the applications of Metal Expansion Joint

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Aug 26,2021

Metal Expansion Joint has been widely used in various industrial sectors. In order to adapt to the different use requirements of different occasions, different forms and different varieties of compensators have been designed and manufactured. In the instrumentation industry, various high-precision sensitive components are mainly used. Metal Expansion Joint is characterized by small structure size, high dimensional accuracy requirements, and high performance requirements such as stiffness.

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The corrugated pipe in the pressure vessel manufacturing industry usually adopts a thick-walled single layer, with a relatively large wave size, and the thickness is in the range of ten millimeters or even tens of millimeters. However, with the expansion of the application range of pressure vessels, multi-layer corrugated pipes for high-pressure vessels have also been widely used.
In the application of thermal pipe network, large axial or radial displacement is often required. The general displacement range is between 100 to several hundred millimeters. And the required design pressure is often 1.6~2.5Mpa. As a result, the use requirements have produced structural forms such as external pressure steel sleeve type, compound tie rod type and compound hinge type.
In some industries, various pipelines have both large displacement requirements and anti-corrosion and wear-resistant performance requirements. In this application, a large number of corrosion-resistant alloys or Metal Expansion Joints made of super stainless steel are used. . Wear-resistant materials are sprayed or surfacing in the inner bushings of some expansion joints. Or pasted with wear-resistant ceramic pieces and so on.
In certain machinery manufacturing industries, the size of the Metal Expansion Joint is subject to various constraints due to the limitation of the size of the equipment structure. There are limitations on the size of the inner and outer diameters of the bellows, as well as the length of the bellows. At the same time, there are requirements for larger displacement and higher service life. For example, the Metal Expansion Joint used in marine diesel engines is a product that needs to meet the above-mentioned multiple performance requirements.

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