DIN EN ISO 1179-2 (2014-03)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 2: Heavy-duty (S series) and light-duty (L series) stud ends with elastomeric sealing (type E) (ISO 1179-2:2013)
出版：German Institute for Standardisation (Deutsches Institut für Normung)
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