Quality

Certified. Verified. Documented.

Every bellows and expansion joint we ship passes through our own testing floor before it leaves the building — not a subcontracted lab.

Quality Management

Uma Bellows ISO 9001:2015 certificate

Click the certificate to view it full-size. Certificate number E202201610, issued by Royal Assessments Pvt. Ltd. — the on-file copy shows "Certification Valid Until: 28/01/2025"; confirm current renewal status before publishing this as live proof of certification.

MIG welding at Uma Bellows
Fabrication to Standard
Finished units packed and inspected before dispatch
Inspected Before Dispatch

Destructive Testing

TestWhat it verifies
Cyclic Life TestingFatigue life under repeated movement, to the design cycle count
Meridional Yield Rupture TestingBurst/rupture pressure margin beyond rated working pressure
Squirm TestingStability under axial compression before column buckling (squirm)

Non-Destructive Testing

TestWhat it verifies
RadiographicInternal weld defects via X-ray
Liquid & Fluorescent PenetrantSurface-breaking cracks and porosity
Magnetic ParticleNear-surface defects in ferromagnetic material
UltrasonicInternal flaws and wall thickness
Pressure TestingLeak-tightness under working pressure
Halogen Leak & Mass SpectrometerFine leak detection beyond visual/pressure testing

Certified personnel

Our testing floor includes staff holding individual NDT certifications. We're not publishing named personal certifications on this page until we've confirmed current employment and consent from the individuals involved — ask us directly for personnel qualification records as part of an RFQ.

Need documentation for a tender?

We can provide the ISO certificate and relevant test reports as part of your RFQ package.

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