SS304/316 Stainless Steel Corrugated Pipe
Metal Bellows
Metal bellows are flexible, corrugated tubular components manufactured from thin metal sheets or tubes. Their characteristic annular or helical corrugations enable axial compression and extension, angular deflection, and lateral displacement while maintaining a leak-tight pressure boundary. They are widely used in piping systems, valve stems, mechanical seals, thermal expansion joints, and precision instrumentation where controlled flexibility and hermetic sealing are required.
Key Structural Features
- Corrugated profile: The accordion-like pleats provide elastic deformation capacity in multiple directions.
- Multiple material options: Commonly made of stainless steel (304, 316L), Inconel, Hastelloy, Monel, brass, or bronze, depending on corrosion resistance and temperature requirements.
- End connections: Typically welded, flanged, or threaded to match the adjacent piping or equipment.
- Layered (multi-ply) construction: Single-ply for standard use, multi-ply for higher pressure ratings with increased flexibility.
Typical Specifications
| Parameter | Typical Range | Remarks |
|---|---|---|
| Nominal size (DN) | DN15 – DN600 | Custom sizes available |
| Design pressure | 0.1 – 25 MPa | Depends on material & ply |
| Operating temperature | -196°C – 600°C | Up to 800°C for Inconel |
| Axial stroke | ±5 – ±100 mm | Per convolution |
| Wall thickness | 0.2 – 1.5 mm | Single ply |
| Material | 304 / 316L / Inconel 625 | Corrosion-resistant options |
Typical Applications
Metal bellows are used in expansion joints to absorb thermal growth in pipelines, in mechanical seals for rotating equipment, in valve stem sealing, and in sensors/actuators such as pressure gauges and thermostatic controls. Their combination of flexibility and hermetic sealing makes them essential in chemical, petrochemical, power, and aerospace industries.
a) How can I get more details about your products?
You can send an email to our email address. We will provide catalogue and pictures of our products for your reference.We can also supply pipe fittings, bolt and nut, gaskets etc. We aim to be your piping system solution provider.
b) How can I get some samples?
If you need, we will offer you samples for free, but new customers are expected to pay express charge.
c) Do you provide customized parts?
Yes, you can give us drawings and we will manufacture accordingly.
d) To which country have you supplied your products?
We have supplied to Thailand, China Taiwan, Vietnam, India, South Africa, Sudan, Peru , Brazil, Trinidad and Tobago, Kuwait, Qatar, Sri Lanka, Pakistan, Romania, France, Spain, Germany, Belgium, Ukraine etc. (Figures here only include our customers in latest 5 years.).
e) I can't see the goods or touch the goods, how can I deal with the risk involved?
Our quality management system conforms to the requirement of ISO 9001:2015 verified by DNV. We are absolutely worth your trust. We can accept trial order to enhance mutual trust.
