Metal Expansion Joints
Precision-engineered metal bellows joints that absorb thermal movement, vibration and misalignment to protect your critical piping systems.
- ISO 9001
- EJMA
- ASME
- PED
- EAC
In-House Engineering
EN 14917 / EJMA calculations and FEA performed by our own design team.
Multi-Ply Bellows
Precision-formed stainless bellows for high movement and long fatigue life.
Tested & Certified
Pressure, helium leak and cycle-life testing to international standards.
Global Delivery
Worldwide shipping with full material traceability and documentation.
Metal Expansion Joint Types
A complete range of metal bellows expansion joints, selected by the movement they must absorb and the way pressure thrust is controlled.
Axial Expansion Joints
Single-bellows joints that absorb compression and extension along the pipe centerline from thermal growth.
Lateral Expansion Joints
Tied joints that absorb perpendicular displacement while controlling pressure thrust with tie rods.
Angular Expansion Joints
Joints designed for angular rotation about a single plane, typically used in pairs to absorb thermal growth.
Universal Expansion Joints
Two bellows separated by a center spool to absorb large combined axial, lateral and angular movement.
Hinged Expansion Joints
Hinged hardware restrains pressure thrust and allows angular movement in a single plane, used in sets.
Gimbal Expansion Joints
Gimbal rings allow angular movement in any plane while fully restraining pressure thrust.
Metal Expansion Joint Specifications
Typical capabilities across our metal joint range. Final values are confirmed by engineering for each project.
| Parameter | Specification |
|---|---|
| Material | 304 / 316L / Inconel / Incoloy |
| Nominal Diameter | DN 25 – DN 4000 |
| Design Pressure | Full vacuum – 40 bar |
| Temperature Range | -200 °C – 600 °C |
| Movement Type | Axial, lateral, angular, combined |
| Connection | Weld end, flanged, threaded |
| Bellows Layers | Single or multi-ply |
| Standards | EN 14917 / EJMA / ASME |
How to Select the Right Joint
Four steps to a reliable specification. Share these and our engineers confirm the optimal joint and hardware.
Confirm Movement Type
Identify axial, lateral, angular or combined movement and the amount to absorb.
Confirm Pressure & Temperature
Define operating and peak pressure and temperature, plus any cyclic conditions.
Choose Material
Match bellows and hardware alloy to media chemistry and temperature.
Confirm Connection & Space
Select connection type and verify available installation length and anchoring.
Frequently Asked Questions
A metal expansion joint is a flexible metal bellows assembly installed in piping or ducting to absorb thermal movement, vibration and misalignment while containing system pressure.
Start with the movement type, then operating pressure and temperature, material, and connection. Send us those parameters and our engineers recommend the correct configuration.
Bellows are commonly 304 or 316L stainless, with Inconel, Incoloy and other alloys available for high temperature or aggressive media. Hardware is matched accordingly.
Yes. As a manufacturer we build to your drawing — custom diameters, lengths, movements, connection types and restraint hardware.
Nominal diameter, movement type and amount, design pressure and temperature, media, connection type and installation length. A drawing speeds things up.
Ready to specify your expansion joint?
Upload your drawing and send your working conditions — our engineering team replies with a recommended joint and quotation, usually within one business day.
- Upload your drawing or sketch
- Send your working conditions
- Get an engineering recommendation