Historical
ISO/TR 4191:1989
Unplasticized polyvinyl chloride (PVC-U) pipes for water supply - Recommended practice for laying
This Technical Report gives instructions for the correct use and installation of unplasticized PVC pipes for water supply. The geometrical,mechanical and physical properties of the pipes and fittings, covered by this Technical Report, are given in DIS 4422.
International Organization for Standardization [iso]