Historical
ISO 4422-1:1996
Pipes and fittings made of unplasticized poly(vinyl chloride) (PVC-U) for water supply - Specifications - Part 1: General
Specifies the general aspects of pipes, joints, fittings and ancillaries, made of unplasticized poly(vinyl chloride) (PVC-U), for piping systems intended to be used for buried water mains and for water supplies above ground, both inside and outside buildings. Replaces ISO 4422:1990.
International Organization for Standardization [iso]