Historical
ISO 4422-3:1996
Pipes and fittings made of unplasticized poly(vinyl chloride) (PVC-U) for water supply - Specifications - Part 3: Fittings and joints
Specifies the characteristics and properties of fittings (injection-moulded and postformed) and joints made of unplasticized poly(vinyl chloride) (PVC-U), to be used for buried water mains and for water supplies above ground, both inside and outside buildings.
International Organization for Standardization [iso]