Tied Bellows Expansion Joint
- The single tied bellows expansion joint
The single tied bellows expansion joint consists of a bellows
connected to an end with either welded ends or the end of fixed
flanges. Similar to the single united expansion joint, the
difference lies in the inclusion of a tie rod system capable of
withstanding pressure thrust. It is primarily used to absorb axial
displacement and a small amount of lateral displacement. The tie
rod serves as a limiting displacement bar and is equipped with a
stop device, allowing axial displacement to a set position. When
equipped with two tie rods, it can also absorb angular movement
within a single plane. This type of expansion joint is suitable for
pipeline systems without main anchors.Due to its simple structure
and low cost, making it a high-priority consideration wherever
feasible in pipeline installations.
Design Pressure: 0.1~0.25MPa
Design Temperature: -25~800°C
Connection Type: Flange/Welding
Nominal Diameter: DN100~DN3000mm [Customizable to any size]
Standards: EJMA, ASME, GB/T 12777-2019
Customized Materials: 300 series stainless steel, Inconel600,
Inconel625, Incoloy800, Incoloy825, FN-2, B315
- Universal Tied Bellows Expansion Joint:
The universal tied bellows expansion joint consists of two bellows
connected by a intermediate pipe, along with tie rods, end plates,
spherical and conical washers and other structural components. The
tie rod system can absorb lateral displacement in any plane and
withstand pressure thrust from the bellows. Tie rods are arranged
in two or more sets uniformly distributed around the circumference
of the expansion joint.When equipped with two 180-degree tie rods,
the expansion joint can freely deflect in both angle and lateral
direction. However, when three or more tie rods are installed, only
lateral deflection is possible.
Design Pressure: 0.1~2.5MPa
Design Temperature: -25~800°C
Connection Type: Flange/Welding
Nominal Diameter: DN100~DN3000mm [Customizable to any size]
Standards: EJMA, ASME, GB/T 12777-2019
Customized Materials: 300 series stainless steel, Inconel600,
Inconel625, Incoloy800, Incoloy825, FN-2, B315
