Home / Standards / JB/T 2974-1993 JB/T 2974-1993 Abolished 滚动轴承代号方法的补充规定 Standard Type JB ICS N/A CCS N/A Status Abolished Issue Date 1993-05-07 Implementation 1994-01-01 Centralized Committee 机械工业部 Issuing Authority 机械工业部