ASME B1.20.3-1976干封管螺纹(英制)Dryseal pipe threads (inch).pdf,ANSI-B1.20.3 ADOPT1ON NOTICE ANSI-B1.20.3, Pipe Threads, Inch, Dryseal, was adopted on October 3, 1994 for use by the Departmentof Defense (DoD). Proposed changes by DoD activities mustbe s