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Hinged/ Double Hinged

METALLIC HINGED EXPANSION JOINT

A single-bellows expansion joint fitted with hinge mechanisms, specifically designed to absorb angular rotation in one plane while restraining pressure thrust.

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Hinged

expansion joint

The Metallic Hinged Expansion Joint is constructed with a bellows element equipped with hinges and hinge pins. The hinge system allows angular movement in a single plane while simultaneously restraining the pressure thrust generated within the piping system. Available with weld ends, fixed or loose flanges, with or without sleeves, this design is an economical solution for directional flexibility in constrained piping systems.

  • Size Range (DN)

    DN50 – DN5000

  • Materials

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

  • Movements

    Angular (single plane)

  • Pressure Rating

    Up to 100 bar (higher on request)

  • Temperature Range

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

Hinged

expansion joint

The Metallic Hinged Expansion Joint is constructed with a bellows element equipped with hinges and hinge pins. The hinge system allows angular movement in a single plane while simultaneously restraining the pressure thrust generated within the piping system. Available with weld ends, fixed or loose flanges, with or without sleeves, this design is an economical solution for directional flexibility in constrained piping systems.

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  • Size Range (DN)

    DN50 – DN5000

  • Materials

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

  • Movements

    Angular (single plane)

  • Pressure Rating

    Up to 100 bar (higher on request)

  • Temperature Range

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

Typical use case: Ideal for piping systems with directional changes that require large single-plane angular rotation, such as high-temperature process lines and irregular pipe layouts in power or petrochemical plants.

Other applications include:

  • Hot process pipelines with directional changes
  • Power plants and petrochemical installations
  • Steam, flue gas, and exhaust systems
  • Large-diameter piping in industrial and marine systems
  • Specifically designed to absorb angular rotation in a single plane
  • Hinges restrain pressure thrust, reducing loads on anchors
  • Capable of handling very large angular movements with low reaction forces
  • Provides structural support for nearby pipe dead weight loads
  • Economical solution for large-diameter and irregular layouts
  • Multilayer bellows for high cycle life and durability
  • Excellent resistance to corrosion, temperature extremes, and pressure
  • Minimal maintenance requirement during service
hinged
External Cover / shroud

protects bellows externally

Flow Liner / Inner sleeve

protects bellows from erosion/turbulent flow

Hinge Plates & Pins

allow controlled angular rotation in one plane

Shipping Rods

maintain overall length during transport and handling

End Connections

weld ends, fixed flanges, or loose flanges