UNE-CEN ISO/TS 16486-7
Plastics piping systems for the supply of gaseous fuels - Unplasticized polyamide (PA-U) piping systems with fusion jointing and mechanical jointing - Part 7: Assessment of conformity (ISO/TS 16486-7:2023) (Endorsed by Asociación Española de Normalización in November of 2023.)