Watch the Osma UltraRib overview video
Osma UltraRib has been designed and manufactured to exceed all required industry standards for PVC-U systems, OSMA UltraRib has provided foul and surface water solutions that have been relied upon for over 30 years.
Strength in every rib!
Unique ribbed design for exceptional axial rigidity and radial strength.
The UK’s only single walled ribbed system.
Tried, tested and trusted for over 30 years.
Fully approved to BS EN 13476-3 and WIS 4-35-01.
BBA approved fittings.
Approved by Water Companies.
Meets requirements of Sewers for Adoption 6th, 6a & 7th editions.
Osma UltraRib pipes
- Available in 150, 225 and 300mm diameters.
- Stiffness class SDR34 (SN8).
- Available in 3m and 6m lengths, either in plain ended or socketed
(300mm available in 3m lengths only).
Osma UltraRib chambers
- Range of 450/500/600mm diameter Inspection Chambers.
- Lightweight - no lifting equipment required.
- Fast, easy installation - no wet trades.
- Shafts can be easily cut to required depth on site.
Resilience: Ability to tolerate all necessary maintenance activity.
Post connections: Easily installed, leak tight.
Over 25 years of use: A system that is tried and tested.
Fully tested: Meets requirements of BS EN 13476-3 and WIS 4-35-01.
Fewer joints: With closer tolerances to reduce leakages and blockages.
Health & Safety: Safe site and trench handling.
Socketed fittings with no pipe chamfering: Quick and easy to install.
Flexibility: To tolerate ground movement more readily without failure.
Unique joint design: No ring displacement, secure joints every time.
Smooth bore: For improved hydraulic performance.
Ribbed profile: Enhanced axial and radial strength.
Pipe - Kitemarked to BS EN 13476-3.
Pipe - Water Industry Specification WIS 4-35-01.
Fittings - Covered by British Board of Agrément Certificates.
Chambers - To either BS EN 13598 Parts 1 or 2.
Ofwat Design & Construction Guidance
Sewers for Adoption: 6th, 6A and 7th Edition, under its generic name of:
Thermoplastic Structured Wall Sewer Pipe.