universal tied bellows expansion joint
DN150 6"
The large tie-rod metallic bellows expansion joint is designed for significant multi-directional movement compensation in piping systems. Its key feature is the set of tie-rods connecting the two end flanges, which absorb pressure thrust and limit overall elongation. This design allows it to primarily absorb large lateral movements and angular deflections, while restraining axial pressure loads. It is ideal for complex pipe routing in applications like power plants and refineries, where controlling stress from thermal expansion is critical. Constructed from stainless steel bellows, it offers high temperature and pressure resistance for demanding industrial environments.
Delivery
EXW FCA FOB CIF CIP
minimum order
1 piece
Supply Ability
10piece / Week
Country of Origin
CHINA
Stock Time
10Day
Quantity:
universal Metal Bellows Expansion Joint
This expansion joint consists of two sets of stainless steel bellows linked by an intermediate pipe, matched with end pipes, tie rods, hinge assemblies and end plates. Multi-layer integral formed bellows adopt 304, 316L or 321 stainless steel as standard materials. Main categories include unrestrained duplex type, large tie rod duplex type, duplex hinge type and duplex gimbal hinge type.
## Working Principle Elastic deformation of bellows absorbs axial displacement, lateral displacement, angular deflection and combined complex displacements generated from pipeline thermal expansion, thermal contraction and equipment vibration. Models fitted with tie rods or hinges counteract pressure thrust produced by internal medium, lowering the load borne by pipeline fixed supports significantly.
## Product Advantages 1. Higher compensation capacity than single expansion joints, suitable for L-shaped, Z-shaped and spatially complicated pipe layouts. 2. Tie rods bear internal pressure while bellows only undertake deformation compensation, preventing bellows instability and extending fatigue service life. 3. Excellent vibration reduction, noise reduction, pressure resistance and corrosion resistance. 4. Simplifies the layout of pipe supports and cuts overall engineering costs of piping system.
## Application Fields Thermal heating pipelines, oil & gas transmission pipelines, power plant steam pipelines, chemical process pipelines, metallurgical pipelines, HVAC systems and large pump station piping systems.
## Brief Introduction of Main Types 1. **Unrestrained duplex type**: Without tie rods, only for displacement compensation and cannot withstand internal pressure thrust. 2. **Large tie rod duplex type**: Tie rods bear full pressure thrust, designed for absorbing large lateral displacement. 3. **Duplex gimbal hinge type**: Capable of absorbing lateral and angular displacement in any plane, ideal for complicated piping systems.
