GB/T 4257-1984
Core drills--Technical requirements
2004-08
- Standard No.
- GB/T 4257-1984
- Language
- Chinese
- Release Date
- 1984
- Published By
- General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
- Replace By
- GB/T 4257-2004
- Lastest
- GB/T 4257-2004
- Scope
- This standard applies to straight shank reamers, tapered shank reamers and sleeve reamers.
GB/T 4257-1984 history
- 2004 GB/T 4257-2004 Core drills-Technical requirements
- 1984 GB/T 4257-1984 Core drills--Technical requirements