QJ 218-1977
Type and size of reducing four-way joint (English Version)
- Standard No.
- QJ 218-1977
- Language
- Chinese, Available in English version
- Published By
- Professional Standard - Aerospace
- Status
- Latest
- QJ 218-1977
QJ 218-1977 history
- 1970 QJ 218-1977 Type and size of reducing four-way joint
