This standard specifies the general technical conditions for heavy machinery products and machined parts. This standard applies to heavy machinery products and parts. Unless there are special provisions in product drawings and technical documents, they shall comply with the provisions of this standard.
JB/T 5000.9-1998 history
2007JB/T 5000.9-2007 Heavy mechanical general techniques and standards.Part 9: Cutting
1998JB/T 5000.9-1998 The heavy mechanical general techniques and standards.Cutting