UNE-EN ISO 1179-4:2009 一般用途和流体动力连接 带 ISO 228-1 螺纹的端口和螺柱端,带弹性体或金属对金属密封 第4部分:仅用于一般用途的螺柱端,采用金属对金属密封(B 型)(ISO 1179-4:2007)
Connections for general use and fluid power - Ports and stud ends with ISO 228-1 threads with elastomeric or metal-to-metal sealing - Part 4: Stud ends for general use only with metal-to-metal sealing (type B) (ISO 1179-4:2007)