NF T54-944-5*NF EN ISO 15876-5:2017 Plastics piping systems for hot and cold water installations - Polybutene (PB) - Part 5 : Fitness for purpose of the system
2017NF T54-944-5*NF EN ISO 15876-5:2017 Plastics piping systems for hot and cold water installations - Polybutene (PB) - Part 5 : Fitness for purpose of the system