KS B ISO 9974-3-2013 一般用途和流体动力连接件 带弹性体或金属对金属密封的 ISO 261 螺纹的端口和螺柱端 第 3 部分:带金属对金属密封的螺柱端(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)