Historical
ISO 4422-2:1996
Pipes and fittings made of unplasticized poly(vinyl chloride) (PVC-U) for water supply - Specifications - Part 2: Pipes (with or without integral sockets)
Gives the characteristics and properties of extruded pipes made of unplastized polyvinyl chloride (PVC-U), with or without socket(s) and intended to be used for buried water mains and services and for water supply above ground both inside and outside buildings.
International Organization for Standardization [iso]