Expansion joints are designed to safely absorb movement caused by thermal expansion and contraction of piping in piping systems.
Without them, pipes would not be able to withstand the forces exerted upon them and entire pipework systems would fail. When correctly selected and installed expansion joints act to prolong the service life of the pipework system and reduce the risk of downtime and for additional maintenance and repair.
Expansion joints - sometimes called expansion bellows, flexible joints or Expansion joint - are devices that comprise of a flexible element known as the bellows membrane that is fitted to end connections that are best suited to the pipework they are to be installed in.
Expansion joints are used in all kinds of different sectors and in a huge range of different industrial contexts. Essentially, wherever there is a need to control pipework movement expansion joints are required.
Expansion joint failure can occur for various reasons, but experience shows that failures falls into several distinct categories.
补偿器采用矩形截面，圆角波形，管道中单个膨胀节承受二维方向位移。由2个膨胀节组成的肘接管道可承受三维方向位移。矩形圆角金属波纹膨胀节有全高、半高型、按照烟道尺寸，应力应变要求用户可多波节选用。
波纹膨胀节与管道支座的安装方法详见下图，在安装过程中必须一致遵守。
Compensator reliability is by the design, manufacture, installation and operation and management and other aspects of the composition. Reliability should also be considered from these aspects.
Pipe expansion joints are also known as compensators, as they 'compensate' for the thermal movement.
Expansion joints are required in large ducted air systems to allow fixed pieces of piping to be largely free of stress as thermal expansion occurs.
疲劳寿命设计由波纹管补偿器的失效类型及原因分析可以看出，波纹管的平面稳定性、周向稳定性及耐腐蚀性能均与其位移量即疲劳寿命相关。过低的疲劳寿命将会导致波纹管稳定性及耐蚀性能下降。根据试验和使用经验，用于供热工程的波纹管疲劳寿命应不小于1000次。
Metal pipe expansion joints can withstand the design temperatures, pressures, as well as, provide the capacity necessary to absorb thermal growth of the piping system.
Stainless steel bellows expansion joint is the compensating elements installed in pipelines, machines and containers, we often call it compensator.
Stainless steel bellows expansion joint mainly has three basic movement types: axial movement, lateral movement and angular movement.
Expansion joints are devices containing a bellows membrane that are designed to absorb dimensional changes, such as those that occur due to thermal expansion or contraction of a pipeline, duct or vessel.
Each grade is typically made to a specific Brinell hardness value, as opposed to other steels that are made with tensile strength and toughness in mind.
SHS ceramic lined
SHS are currently being developed the world over for the production of powders and near-net shape components of advanced materials.
