DIN EN 805:2023-12 供水 建筑物外部系统和组件的要求；德语和英语版本 prEN 805:2023
Water supply - Requirements for systems and components outside buildings; German and English version prEN 805:2023 / Note: Date of issue 2023-11-17*Intended as replacement for DIN EN 805 (2000-03).