This standard specifies the basic principles and preparation methods for light industrial machinery product drawings and design document numbers. This standard applies to the numbering of light industrial machinery product drawings and design documents.
QB/T 1753.4-1993 history
2023QB/T 1753.4-2023 Light industry machinery—Product drawing and design document— Part 4:Numbering principles
1993QB/T 1753.4-1993 Numbering principles for light machine product drawings and design documents