Home / Standards / JB/T 9047-1999 JB/T 9047-1999 Abolished 弧形方坯连铸机结晶器铜管 Standard Type JB ICS N/A CCS N/A Status Abolished Issue Date 1999-06-28 Implementation 2000-01-01 Centralized Committee 国家机械工业局 Issuing Authority 国家机械工业局