Home / Standards / JB/T 6992-1993 JB/T 6992-1993 Abolished 窄轨矿车通用技术条件 Standard Type JB ICS N/A CCS N/A Status Abolished Issue Date 1993-09-03 Implementation 1994-07-01 Centralized Committee 机械工业部 Issuing Authority 机械工业部