2007NF P41-211-1-1:2007 Building works - Unplasticized polyvinyl chloride piping installation : cold water under pressure - Part 1-1 : technical specifications.
2000NF P41-211/A1:2000 DTU 60.31 - Building works - Unplasticized polyvinyl chloride piping installation - Cold water under pressure - Technical specifications.