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Rectangular

METALLIC RECTANGULAR EXPANSION JOINT

A custom-fabricated expansion joint with a rectangular or square cross-section, designed for ducts, flue gas systems, and other non-circular piping applications.

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Rectangular

expansion joint

The Metallic Rectangular Expansion Joint is engineered to accommodate axial, lateral, and angular movements in large ducting systems. Its design includes rounded or mitered corners to maintain flexibility and reduce stress concentrations. These joints are typically used where space or design requirements call for non-cylindrical shapes, such as in power plant exhausts or industrial ventilation systems.

  • Size Range (DN)

    DN50 – DN5000 (or custom rectangular dimensions)

  • Materials

    SS304 / SS316L / SS321 / Inconel / Hastelloy / others on request

  • Movements

    Axial, Lateral & Angular

  • Pressure Rating

    Up to 100 bar (higher on request)

  • Temperature Range

    –196°C to +800°C (depending on material)

Rectangular

expansion joint

The Metallic Rectangular Expansion Joint is engineered to accommodate axial, lateral, and angular movements in large ducting systems. Its design includes rounded or mitered corners to maintain flexibility and reduce stress concentrations. These joints are typically used where space or design requirements call for non-cylindrical shapes, such as in power plant exhausts or industrial ventilation systems.

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  • Size Range (DN)

    DN50 – DN5000 (or custom rectangular dimensions)

  • Materials

    SS304 / SS316L / SS321 / Inconel / Hastelloy / others on request

  • Movements

    Axial, Lateral & Angular

  • Pressure Rating

    Up to 100 bar (higher on request)

  • Temperature Range

    –196°C to +800°C (depending on material)

Typical use case: Extensively applied in large flue gas ducts, exhaust systems, and industrial ventilation lines, where non-circular geometry requires a rectangular expansion solution.

Other applications include:

  • Power generation plants (boiler exhaust, FGD systems)
  • Petrochemical and refining units
  • Cement and steel plant ducting
  • Industrial HVAC and air handling systems
  • Custom-fabricated for square or rectangular ducts
  • Capable of absorbing axial, lateral, and angular movements
  • Available with rounded or mitered corner designs for stress reduction
  • Robust construction for large-scale industrial systems
  • Corrosion- and temperature-resistant materials for harsh service
  • Long service life with minimal maintenance
  • Can be supplied with liners, covers, and reinforcements for heavy-duty use
Pending
Corner Configurations

rounded or mitered corners to suit application

Flow Liners / Sleeves

reduce turbulence and erosion inside ducts

External Covers

protect bellows from external damage

End Connections

flanged or welded to ductwork

Support Frames

provide rigidity in large duct installations