QJ 209-1977
Weld joint type and size (English Version)
- Standard No.
- QJ 209-1977
- Language
- Chinese, Available in English version
- Published By
- Professional Standard - Aerospace
- Status
- Latest
- QJ 209-1977
QJ 209-1977 history
- 1970 QJ 209-1977 Weld joint type and size
