标准摘要 Cross Reference: ARP1176,ARP1376,ARP4266,ARP4296,AS1176,AS1376,AS18280,ASMEB46.1,ASMEY14.36M,ASMEY14.5M 展开完整摘要 英文名称FITTING, ELBOW, 90°, STANDARD AND REDUCER, BULKHEAD, FLARELESS, PRECISION TYPE