GB 1222-1975
spring steel
1985-05
- Standard No.
- GB 1222-1975
- Language
- Chinese
- Release Date
- 1975
- Published By
- Professional Standard - Agriculture
- Replace By
- GB/T 1222-1984
- Lastest
- GB/T 1222-2016
GB 1222-1975 history
- 2016 GB/T 1222-2016 Spring steels
- 2007 GB/T 1222-2007 Spring steels
- 1984 GB/T 1222-1984 Spring steels
- 1975 GB 1222-1975 spring steel
GB 1222-1975 was changed to GB/T 1222-1984 Spring steels.