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OSMA UltraRib

UltraRib offers a comprehensive range of pipes and fittings for foul water systems in adoptable situations requiring a SN8 stiffness classification.

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UltraRib drainge system
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Transport and attenuate

UltraRib PVC-U pipes have a smooth inner surface with external ribs that provide exceptional axial rigidity and enhanced radial strength whilst remaining lightweight. The pipe is complemented by a comprehensive range of fittings.

UltraRib pipe stiffness classification

High Stiffness classification

UltraRib pipes have a stiffness classification of SN8 and come in standard pipe lengths. They are available in 150mm – 300mm diameters.

UltraRib Kitemark


UltraRib pipe and fittings meet all relevant regulation and compliance standards. UltraRib pipes meet the requirements of BS EN 13476-3 and are Kitemarked. The fittings are covered by British Board of Agrément Certificate no 98/3472.
Easily calculate the pipe deformation values of your next project with our online tool.

What’s next?

What’s next?

Want to learn more about how OSMA UltraRib could benefit your next project? Contact our Technical Design team for advice and support.
You can also keep up to date with new product ranges, systems and projects by signing up to our Newsletter.
And why not take this opportunity to have a look through our downloadable product guides, certifications and CAD drawings.


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