Custom Stainless Steel Vacuum Bellows | 304/316L Laser-Welded

Custom metal bellows with KF, CF, ISO and other end connection configurations for vacuum and flexible piping applications.

SpecificationA/Outer DiameterB/Corrugation DiameterWall Thickness
Φ1919260.15
Φ2828370.15
Φ4545560.15
Φ5454670.15
Φ6363850.2
Φ8989104.00.2
Φ102102125.00.2
Φ1591591850.2
Φ2192192500.25
Φ2542543000.25
Can the two ends of the vacuum bellows be customized separately?
Yes. The two ends can be configured independently according to the required connection type and dimensions. Different flange or tube-end configurations can be supplied for each end.
Can KF and CF flanges be combined on the same bellows?
Yes. Mixed end configurations such as KF × CF can be manufactured according to the required vacuum system configuration.
Can ISO vacuum flange connections be supplied?
Yes. ISO-type flange configurations can be supplied together with KF, CF, and other specified connection types, subject to the required dimensions and configuration.
Can the bellows length be customized?
Yes. The overall length can be customized according to the installation space and required movement range. Standard lengths from 100 to 2000 mm are available for the listed sizes.
Can the bellows diameter and wall thickness be customized?
Yes. Bellows diameter, wall thickness, length, and other applicable dimensions can be specified for custom configurations.
Can these bellows accommodate axial movement?
Yes. The bellows are designed to accommodate axial expansion and compression within their specified operating range. The allowable movement depends on the bellows size, length, and configuration.
Are the bellows helium leak tested?
Yes. Helium mass spectrometer leak testing can be provided to verify the sealing integrity of the bellows assembly. The required leak-rate specification can be confirmed for custom orders.
Material

304 Stainless Steel, 316L Stainless Steel

Size

Φ19, Φ28, Φ45, Φ54, Φ63, Φ89, Φ102, Φ159, Φ219, Φ254

Length (mm)

100mm, 200 mm, 250 mm, 300 mm, 400 mm, 500 mm, 800 mm, 1000 mm, 1500 mm, 2000 mm, Custom

Country of Origin

China

Leak Testing

100% Helium Leak Tested

Leak Rate

<5 × 10⁻¹⁰ Pa·m³/s

Vacuum Range

1.5 × 10⁻⁵ Pa to 1 × 10⁻¹⁰ Pa

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