Home / Standards / JB/T 6383.3-1992 JB/T 6383.3-1992 Abolished 锥密封焊接式三通管接头 Standard Type JB ICS N/A CCS N/A Status Abolished Issue Date 1992-07-14 Implementation 1993-07-01 Centralized Committee 机械工业部 Issuing Authority 机械工业部