NF E48-065-3*NF EN ISO 9974-3:2000 一般用途和流体动力用连接件 带弹性体密封件或金属对金属密封件的ISO 261螺纹的孔口和螺柱端 第3部分:带金属对金属密封件的螺柱端(B型)
Connections for general use and fluid power - Ports and stud ends with ISO 261 threads with elastomeric or metal-to-metal sealing - Part 3 : stud ends with metal-to-metal sealing (type B)