MS 979: PART1: 1985 & MS 979: PART 2:1985
(BS 4660, BSEN 1401 & ISO 4435)

The Underground Sewerage Pipes commonly known as the "Sewer & Storm Pipes" which are suitable for all underground usage.

Available from 100mm to 315mm diameter, these pipes are laid in the ground as scupper drain, sewer or drainage connections.
They are produce in golden brown colour.
The pipes are joined by solvent cement joint and rubbering joint.

* These values of wall thickness are for a standard dimension ration (SDR) of 41.