Plastics piping systems for hot and cold water installations - Crosslinked polyethylene (PE-X) - Part 3: Fittings (ISO 15875-3:2003 + Amd 1:2020 + Amd 2:2021); German and English version EN ISO 15875-3:2003 + A1:2020 + A2:2021 / Note: This standard is ...