ASME B1.20.3 : 1976现行
DRYSEAL PIPE THREADS (INCH)
出版：American Society of Mechanical Engineers
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基本信息
标准编号： ASME B1.20.3 : 1976
标准类别：Standard
出版单位：American Society of Mechanical Engineers
标准页数：0
标准简介
Includes two classes of NPTF Dry-seal pipe threads; Class 1 and Class 2 also the classes differ only in inspection requirements, with Class 1 threads exactly those standardized in ANSI B2.2-1968 (inspection of root and crest truncation is required.
