Home / Standards / JB/T 6315-1992 JB/T 6315-1992 Abolished 汽轮机焊接工艺评定 Standard Type JB ICS N/A CCS N/A Status Abolished Issue Date 1992-06-26 Implementation 1993-01-01 Centralized Committee 机械工业部 Issuing Authority 机械工业部