QJ/Z 49-1978
Carbide Twist Drill Inlaid with Rod (English Version)
- Standard No.
- QJ/Z 49-1978
- Language
- Chinese, Available in English version
- Published By
- Professional Standard - Aerospace
- Status
- Latest
- QJ/Z 49-1978
QJ/Z 49-1978 history
- 1970 QJ/Z 49-1978 Carbide Twist Drill Inlaid with Rod
