Metal Bellows Expansion Joints FAQs
Do your expansion joints reduce vibration?
Yes, metal expansion joints absorb vibration, protecting pumps, compressors, turbines, and other equipment connected to the pipeline.
How quickly can custom bellows be manufactured?
Lead times vary, but local manufacturing in Sydney allows faster turnaround compared with offshore suppliers. Aflex can advise based on your project scope.
Do you offer quotes for custom bellows?
Yes. Contact Aflex via phone or email to request a custom quote. Our Sydney team can advise on sizes, materials, and delivery timeframes.
Which industries use metal bellows?
Industries include water and wastewater, power generation, mining, oil and gas, HVAC, marine, and infrastructure projects like bridges and commercial buildings.
Can expansion joints be custom-made?
Yes, Aflex designs and manufactures custom expansion joints to meet specific pipe sizes, pressure ratings, movement requirements, and materials.
How long do expansion joints last?
With proper installation and maintenance, metal expansion joints can last many years, depending on pressure, temperature, and movement conditions.
What is ISO 9001 certification?
ISO 9001 is a quality management certification ensuring consistent processes, traceability, and continuous improvement in manufacturing.
How are metal bellows tested?
All Aflex bellows are tested through pressure testing, visual inspection, and quality assurance to meet design and safety specifications before dispatch.
Are Aflex expansion joints made in Australia?
Yes, all our bellows and expansion joints are designed and manufactured at our Sydney facility, ensuring Australian-made quality and fast turnaround.
What sizes of expansion joints do you supply?
Aflex manufactures expansion joints from 40NB to 2000NB, custom-made to your project requirements.
Which materials are used for metal bellows?
Aflex bellows are made from stainless steel (316, 321), nickel alloys (600/800 series), Hastelloy, or custom alloys depending on temperature, pressure, and corrosion requirements.
What is pressure thrust in an expansion joint?
Pressure thrust is the force created by internal pressure acting on the bellows. Restrained designs like TEB, HEB, and GEB control thrust to protect pipe anchors and connected equipment.
What is lateral movement in piping?
Lateral movement is the side-to-side displacement of a pipe. Universal, gimbal, and tied bellows assemblies allow for controlled lateral movement.
What is axial movement in piping?
Axial movement is expansion or contraction along the length of a pipe. Metal bellows are designed to absorb this movement safely.
When should I use an expansion joint?
Use an expansion joint whenever a pipe system experiences thermal expansion, vibration, pressure changes, or structural movement. Expansion joints protect your pipes and equipment from stress or damage.
What types of expansion joints does Aflex make?
Aflex manufactures single (SEB), universal (UEB), hinged (HEB), gimbal (GEB), tied (TEB), pantograph, and externally pressurised (XB) expansion joints for all industrial piping applications.
What is the difference between a bellows and an expansion joint?
A bellows is the flexible element, while an expansion joint is the complete assembly including flanges, tie rods, hinges, or gimbals, ready to install in your pipeline.
What is a metal bellows?
A metal bellows is a flexible, corrugated metal component designed to absorb movement, vibration, and thermal expansion in piping systems.
Do you supply metal expansion joints in Sydney?
Yes. Aflex manufactures and supplies custom metal expansion joints from our Sydney factory, serving industrial and infrastructure projects across New South Wales and Australia.
