A Rectangular Metal Bellows Expansion Joint is a specially designed expansion joint used in rectangular or square ducting systems, primarily for air, flue gas, and low-pressure applications.
Unlike circular expansion joints, it features a rectangular bellows structure that matches duct geometry, allowing it to absorb thermal expansion, vibration, and displacement in large cross-section systems such as boilers, ventilation ducts, and exhaust systems.
It is widely used in power plants, steel plants, cement plants, and industrial ventilation systems.