Osma Below Ground Drainage
industry-leading pipes and fittings designed to last longer and be easier to install.
The Science of Drainage Overview
Drainage solutions including the Osma Bottle Gully
It's advanced design include a rotating body, which means you can position the gully at an angle that suits the drainage system.OsmaDrain Range
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.
Designed to exceed
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.Osma Ultrarib range
Pipe Deformation Tool
Use our handy on-line tool to instantly calculate the deformation rate for Osma UltraRib pipe.Use the tool
Osma Domestic Channel and Drainage
Osma domestic channel drainage
Lightweight and robust drainage soultions - plastic and galvanised grating optionsOsma inspection chambers range