Underground drainage, land drainage, stormwater management
‘Osma TwinWall is specifically designed to handle the collection and disposal of surface and sub-surface water. Manufactured from either Polyethylene or Polypropylene, the system is available in diameters ranging from 150mm up to 600mm. A comprehensive range of fittings are available in all sizes.
Wavin TwinWall is manufactured by a twin extrusion process in which the two layers are extruded simultaneously, one inside the other and heat welded together in one continuous process. The WavinTwin system is designed for use as a direct alternative to all non-pressurised gravity drain / sewer systems except where Local Authority adoption is necessary.
Typical applications include:
Highway filter and carrier drains
Rail track drainage
Unadoptable surface water drains, eg on industrial or commercial developments
Golf course land drainage
Methane gas venting