DIN EN ISO 1179-4 : 2008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：German Institute for Standardisation (Deutsches Institut für Normung)
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