Home / Standards / JB 5174-1991 JB 5174-1991 Active 喷油咀偶件型式及连接尺寸 Standard Type JB51 ICS N/A CCS N/A Status Active Issue Date 1991-05-17 Implementation 1992-01-01 Centralized Committee 机械电子工业部 Issuing Authority 机械电子工业部