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Wavin Osma UltraRib

What is Foul water drainage and Surface water drainage?

Foul Drainage

is the system of pipework that carries waste water away from a bathroom, kitchen or utility room. For all properties connected to mains drainage, foul sewers will eventually transfer the contents of the drainage system to a local sewage treatment plant.

Surface water drainage

occurs when rainwater falls on a property and drains away. Surface Water Drains are used to carry away rainwater from gutters, patios & driveways, roads and sports fields. The rainwater, which is not contaminated and hence is not harmful, will be transported to a stream, a river or a soakaway.


Wavin Osma UltraRib - Corrugated pipe

Wavin Osma UltraRib systems are designed for use in gravity drainage and sewerage installations at depths of up to 10 metres. Osma UltraRib is a fully socketed system of pipe and fittings which combines secure jointing with ease of installation.

Corrugated pipe is a flexible material, built with alternating ridges and grooves. It is used in drains where flexibility, durability and strength are important. UltraRib pipe has a smooth inner surface and externally has a repeating pattern of concentric ribs which gives the pipe its exceptional axial rigidity and enhanced radial strength. 

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.

3 Wavin Osma UltraRib Pipes

Ribbed feature UltraRib v3
Orange tick benefit v1


Unique ribbed design for exceptional axial rigidity and radial strength.

Orange tick benefit v1


The UK’s only single walled ribbed system.

Orange tick benefit v1


Tried, tested and trusted for over
30 years.



Ultra Reliable v3


Ability to tolerate all necessary maintenance activity.

Post connections:  
Easily installed, leak-tight.

Over 30 years of use:  
A system that is tried and tested.


Ultra Efficient v3

 Fewer joints: 

With closer tolerances to reduce leakages and blockages.

Health & Safety: 
Safe site and trench handling.

Socketed fittings with no pipe
Quick and easy to install.


Ultra Performance v3


To tolerate ground movement more readily without failure.

Unique joint design:
No ring displacement, secure joints every time.

Smooth bore: 
For improved hydraulic performance.

Product Ranges

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).

See the range

Osma UltraRib fittings

- Comprehensive range of fittings.
- Unique high performance joint.

See the range

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.

See the range

Case Study: Travis Perkins

For a new multi-million pound Travis Perkins Regional Distribution Centre in Coventry, the main contractor required versatile below ground drainage solutions which offered proven performance and ease of installation. Wavin met their requirements by supplying more with 1700 linear metres of stormwater and foul drainage solutions.

Read case study   Download case study
UltraRib pipe - Case Study - Travis Perkins

Looking to learn more about Wavin Osma UltraRib?

Our eLearning course will take you through the steps required to install Osma UltraRib in adoptable applications whilst adhering to the latest regulations including the new Design Construction Guidance for England.

Click here to take the course.

Downloads and Tools

Osma UltraRib - Product and Installation Manual


Osma UltraRib Product Selector


Osma UltraRib Product Selector


Pipe Deformation Tool

Use our handy on-line tool to instantly calculate the deformation rate for Osma UltraRib pipe.

Use the tool

Contact one of our experts today or fill
out the form below with your enquiry.

Call us - 01249 471 187

Monday - Friday 8.30 - 17.00 hours
Friday 8.30 - 15:00 hours
Saturday - closed
Sunday - closed

Girl in a jacket

To find out more about our UltraRib and Hepworth Clay solutions and which would be the best fit for your needs, please request a consultation below.



  • 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.

Quality assured

  • 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.