Expansion Joints
Aras Power Systems designs and supplies expansion joints for flue-gas ducts and industrial systems, accommodating thermal movement, vibration, misalignment and dynamic loads while maintaining system integrity. Solutions include fabric, rubber and metallic expansion joints engineered for the project’s temperature, pressure, movement, media and installation constraints.
Codes & standards
Aras Power Systems designs fabric, rubber and metallic expansion joints to the client-nominated code basis, combining international standards with project-specific operating, safety and documentation requirements.
- EJMA
- ASME
- EN standards
- ASME IX
- ISO 12944
Our Services
Our engineering and supply scope is structured to deliver safe, efficient and project-specific equipment from concept design through fabrication, site support and documentation.
Design compliance
- EJMA-based engineering: applying recognised expansion-joint design principles for movement, pressure and fatigue checks.
- Custom engineering: tailoring joint type, layer build-up, flange arrangement and installation gap to the operating conditions.
Finite Element Analysis (FEA)
- Lifetime calculation: evaluating stresses and expected service life under thermal and mechanical cycles.
- Structural integrity: checking frames, flanges, liners and tie rods for durability and safety.
Performance optimisation
- Movement accommodation: designing for axial, lateral and angular movements caused by thermal expansion and vibration.
- Pressure resistance: ensuring the joint and retaining hardware withstand internal pressure and operating loads.
Material selection and design
- Diverse materials: selecting fabric, rubber, metallic bellows and insulation layers based on media and temperature.
- Elevated-temperature design: incorporating insulation pillows, liners and thermal barriers where required.
Quality and reliability
- Manufacturing control: coordinating fabrication to meet dimensional, material and welding requirements.
- Reliability in operation: focusing on correct installation, movement capacity and maintainability.
Project documentation
- Technical package: supplying drawings, material specifications, movement data and installation instructions.
- Maintenance guidance: defining inspection intervals and replacement considerations for long service life.
Technical specification
| Types | Fabric, rubber and metallic expansion joints |
|---|---|
| Movements | Axial, lateral, angular and combined movements |
| Service | Flue gas, hot air, process gas and auxiliary systems |
| Design features | Liners, insulation pillows, tie rods, limit rods, retaining bars |
| Materials | Elastomers, technical fabrics, stainless steel bellows, carbon/stainless frames |
All ranges are a configurable engineering design envelope, finalised against project-specific data and applicable codes.
Applications
- Flue-gas duct systems
- Gas turbine and HRSG ducting
- Boiler outlet and process exhaust lines
- Industrial ventilation and hot-air systems
Frequently asked questions
Which type of expansion joint should be used?
The selection depends on temperature, pressure, media, movement amount, available space and maintenance strategy. Aras evaluates these inputs before recommending fabric, rubber or metallic construction.
Can you design for high temperature flue gas?
Yes. High-temperature applications can include insulation pillows, internal liners and material layers selected for the operating temperature.
What information is needed for a quotation?
Duct dimensions, temperature, pressure, media composition, required movements, flange details, installation gap and operating cycle information are required for accurate design.
Request engineering & a budget
Send your process data, site conditions and code basis, and the Aras engineering team will respond with a tailored concept and budget.
info@araspowersystems.com · +90 312 504 20 26 · +90 530 427 39 44
