This standard specifies the technical requirements for ordering, manufacturing and acceptance of carbon structural forgings. This standard applies to carbon structural steel forgings for general use in heavy machinery products. This standard does not apply to forgings with special technical requirements.
JB/T 6397-1992 history
2006JB/T 6397-2006 Specification for the heavy carbon structural steel forgings
1992JB/T 6397-1992 Large carbon structural steel forgings