NF T54-938-5*NF EN ISO 15874-5:2013 Plastics piping systems for hot and cold water installations - Polypropylene (PP) - Part 5 : fitness for purpose of the system
2013NF T54-938-5*NF EN ISO 15874-5:2013 Plastics piping systems for hot and cold water installations - Polypropylene (PP) - Part 5 : fitness for purpose of the system