GB 2271-1984
Oil tempered chromium-vanadium alloy steel valve spring quality wires
- Standard No.
- GB 2271-1984
- Language
- Chinese
- Release Date
- 1984
- Published By
- General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
- Lastest
- GB 2271-1984
GB 2271-1984 history
- 1984 GB 2271-1984 Oil tempered chromium-vanadium alloy steel valve spring quality wires