标准摘要 Cross Reference: AMS4117,AMS4127,AMS5648,ARP4296,AS478,AS478J,AS4875,AS8879,ASMEB46.1,ASMEY14.36M,ASMEY14.5M,ASTMA108,MIL-C-11796,MIL-PRF-16173 展开完整摘要 英文名称FLANGE, STRAIGHT THREAD PORT, WELD