标准号:IS 8999-1979
发布日期:1979/4/1 12:00:00
实施日期:1999/12/31 12:00:00
适用范围:Covers the requirements and use of gauges recommended for gauging both taper and parallel pipe threads conforming to IS : 554-1975 ' Dimensions for pipe threads where pressure tight joints are required on the threads (second revision )'.