1. Hinged Bellows Expansion Joints
Single Hinged Bellows Expansion Joint
Comprising a single bellows along with a pin, hinge plates, riser
plates,and other structural components.This type of expansion joint
absorbs angular displacement through its change in angle. The
thrust and pressure of the single hinged bellows expansion joint
are borne by the hinge, which ensures that the expansion joint
cannot absorb axial motion and protects the metal bellows from
torsion. Typically, two or more units are used in combination, with
their compensating capacity proportional to the distance.
- Design Pressure: 0.1~2.5 MPa
- Design Temperature: -25~800°C
- Connection Type: Flange/Welding
- Nominal Diameter: DN100~DN3000mm [Customizable to any size]
- Standards: EJMA, ASME, GB/T 12777-2019
2. Universal Hinged Expansion Joint
Comprising two bellows connected by a intermediate pipe, along with
a pin, hinge plates,riser plates,and other structural
components.This expansion joint absorbs lateral and angular
displacement within a plane while withstanding pressure thrust from
the bellows,so that the pressure is not transmitted to fixed points
and guide rails in the pipeline system.The hinge ensures that the
expansion joint cannot absorb axial motion and is used to protect
the metal bellows from torsion. In design, the pressure absorbed by
the hinge must exceed how much it can absorb. Typically, two or
more units are used in combination, with their compensating
capacity proportional to the distance.
- Design Pressure: 0.1~2.5 MPa
- Design Temperature: -25~800°C
- Connection Type: Flange/Welding
- Nominal Diameter: DN100~DN3000mm [Customizable to any size]
- Standards: EJMA, ASME, GB/T 12777-2019
3. Universal Gimbal Expansion Joint
Consisting of two bellows connected by a connecting pipe and a
system of double circular gimbal, this expansion joint can absorb
significant lateral movements in any plane and angular movements in
any direction. The gimbal can be circular or square. For circular
gimbal,their torque should be considered, while for square ones,
instability due to bending should be taken into account. Due to the
gimbal, the pin, and hinge plates' ability to withstand pressure
thrust and other additional external forces, the expansion joint
absorbs internal pressure thrust without exerting external force on
the pipeline.Accordingly,simplifying pipeline support installation
is feasible.
Applied Range: Various complex pipeline systems, compensating for
angular displacement in various spatial pipeline systems such as
L-shaped, Z-shaped, and U-shaped pipelines.
- Design Pressure: 0.1~4 MPa
- Design Temperature: -25~800°C
- Connection Type: Flange/Welding
- Nominal Diameter: DN100~DN5500mm [Customizable to any size]
- Standards: EJMA, ASME, GB/T 12777-2019
4. Single Gimbal Bellows Expansion Joint
This type of expansion joint can absorb angular displacement of the
pipeline in any plane. Consisting of a gimbal-hinge structure
including a pin, the gimbal, hinge plates, and riser plates, it not
only restrains pressure thrust of the pipeline but also absorbs
angular displacement in any plane. The expansion joint absorbs
internal pressure thrust without exerting external force on the
pipeline, therefore,simplifying pipeline support installation is
feasible. The gimbal can be circular or square. For circular
gimbal,their torque should be considered, while for square ones,
instability due to bending should be taken into account.
Applied Range: Various complex pipeline systems, compensating for
angular displacement in various spatial pipeline systems such as
L-shaped, Z-shaped, and U-shaped pipelines.
- Design Pressure: 0.1~4.0 MPa
- Design Temperature: -25~800°C
- Connection Type: Flange/Welding
- Nominal Diameter: DN100~DN3000mm [Customizable to any size]
- Standards: EJMA, ASME, GB/T 12777-2019
