Expansion joints are necessary in systems that convey high temperature or pressurized commodities in the form of liquid, steam or exhaust gases.
Bellows are a common type of expansion joint for a pipe system. As you probably notice, a bellows consist of a series of convolutions (ribs). The convolutions handle the internal pressures of the application. The key is the flexibility of the bellows allowing it to accept movement or changes in position of one or both ends.
An expansion joint is a useful component in an infinite number of applications. Metal expansion joint assemblies are commonly used for all kinds of industries and applications including: