Rectangular expansion joints or rectangular bellows have the same function with a normal type round metallic expansion joints , it absorbs three types of movements of lateral, axial and angular. While unlike round metallic expansion joint s where the pressure stress is a circumferential membrane stress, the rectangular expansion joints must be designed for longitudinal bending stresses. Rectangular bellows have various applications in chemical, steel, refining, petrochemical and power industries.
rectangular expansion joints
When to use a rectangular bellows?
Rectangular bellows is extremely suitable for applying to places where require long service life, high temperature, low medium pressure. Rectangular expansion joints are designed to fit with rectangular shape equipment or duct to better deliver medium from square place to round transitional sections.
For connection methods, welding type and flange type are two commonly used connection way for rectangular bellows. And we have there bellows type for your choices: V type, U type and Ω type.
Except for the specifications listed on website, we can also custom-made duct size to provide the most economical design that will absorb the thermal movements of the system. We also need to know which direction the angular and lateral movements will occur to better deign the rectangular expansion joints.
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