Home / Standards / JB/T 6963-1993 JB/T 6963-1993 Active 钢制件熔化焊工艺评定 Standard Type JB ICS N/A CCS N/A Status Active Issue Date 1993-07-27 Implementation 1994-07-01 Centralized Committee 机械工业部 Issuing Authority 机械工业部