QJ 1309-1990
Grading of ZL104 Casting Dispersed Porosity (English Version)
- Standard No.
- QJ 1309-1990
- Language
- Chinese, Available in English version
- Release Date
- 1990
- Published By
- Professional Standard - Aerospace
- Status
- 2008-10
- Latest
- QJ 1309-1990
- Replace By
- QJ 1309A-2008
QJ 1309-1990 history
- 1990 QJ 1309-1990 Grading of ZL104 Casting Dispersed Porosity
- 1970 QJ 1309-1987 Grading of ZL104 Casting Dispersed Porosity
