UNE EN ISO 1179-4:2009现行
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)
出版：Asociacion Espanola de Normalizacion
专家解读视频
