标准摘要 Cross Reference: AMS2700,AMS2759/3,AMS4965,AMS5643,AMS5659,ANSI/ASME/B46.1,ANSI/Y14.36,ARP4296,AS1376,AS4209,AS478,AS478J,AS5272,AS85420,AS85421,ASME/Y14.5M 展开完整摘要 英文名称FITTING ASSEMBLY, ELBOW, 90°, BEAM SEAL, RETAINED NUT