Expansion Joints · Bellows

Stainless Steel Bellows

Precision-engineered expansion joints in SS 304 / 304L / 316 / 316L / 321 / 321L (SS 321 above 425°C). Absorb thermal movement, vibration, and misalignment in piping from -270°C to +700°C.

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ISO 9001:2015 Certified Exporting worldwide Flanged / Threaded / Welded

Stainless Steel Bellows

Flanged • Threaded • Welded End Connections

Stainless steel bellows are precision-engineered expansion joints designed to absorb thermal movement, mechanical vibration, and angular misalignment in piping systems. Manufactured from high-grade SS 304, 304L, 316, 316L, 321 and 321L, our bellows provide reliable performance across a wide range of temperatures and pressures in demanding industrial environments.

Widely used in power plants, oil refineries, chemical processing facilities, HVAC systems, and pharmaceutical plants, our stainless steel bellows help compensate for thermal expansion, reduce pipe stress, and extend the overall service life of piping networks.

Material

SS 304 / 304L / 316 / 316L / 321 / 321L

Temperature Range

-270°C to +700°C

SS 321 required above 425°C

End Connections

Flanged / Threaded / Welded

Certification

ISO 9001:2015

Features
Applications
Specifications

01. Features

Stainless steel bellows from Vigyan are precision-engineered using advanced hydraulic forming and certified TIG welding to deliver long service life, minimal maintenance, and dependable performance under the most demanding operating conditions.

Compensates for axial, lateral, and angular thermal expansion
Reduces pipe stress, anchor loads, and equipment nozzle forces
Hydraulic forming for consistent convolution profile and wall thickness
TIG welding by certified welders for high-integrity seam joints
100% pressure tested and helium leak tested per applicable standards
Corrosion-resistant SS 304 / 304L / 316 / 316L / 321 / 321L construction for extended service life

02. Applications

Our stainless steel bellows are engineered for critical service across a broad spectrum of industries where thermal movement, vibration, and pressure fluctuations must be managed safely and reliably.

Power plants, boiler systems, and steam distribution lines
Oil refineries, petrochemical plants, and gas processing facilities
Chemical processing, pharmaceutical, and HVAC piping systems
Marine, shipbuilding, and offshore platform piping

03. Specifications

Vigyan stainless steel bellows are built to handle a wide operating envelope, with custom sizes, configurations, and end connections available on request.

Material grades: SS 304 / 304L / 316 / 316L / 321 / 321L
Temperature range: -270°C to +700°C (grade dependent — SS 321 required above 425°C)
End configurations: Flanged, Threaded, Welded
Movement types: Axial, Lateral, Angular, Universal
Standards: EJMA & ASME B31.3 design references
Certifications: ISO 9001:2015

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SS 304 / 304L / 316 / 316L / 321 / 321L bellows and expansion joints. Flanged, threaded, and welded configurations available.

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