DIN EN ISO 5771:2023-05 用于输送无水氨的橡胶软管和软管组件 - 规范 (ISO/DIS 5771:2023)
Rubber hoses and hose assemblies for transferring anhydrous ammonia - Specification (ISO/DIS 5771:2023); German and English version prEN ISO 5771:2023 / Note: Date of issue 2023-04-21*Intended as replacement for DIN EN ISO 5771 (2009-10).