QJ 2921-1997
Technical requirements for corrosion resistance of zinc coating and cadmium coating (English Version)
- Standard No.
- QJ 2921-1997
- Language
- Chinese, Available in English version
- Release Date
- 1997
- Published By
- Professional Standard - Aerospace
- Latest
- QJ 2921-1997
- Replace
- QJ 489-1986 QJ 1324-1987
QJ 2921-1997 history
- 1997 QJ 2921-1997 Technical requirements for corrosion resistance of zinc coating and cadmium coating
- 0000 QJ 1324-1987
- 1970 QJ 489-1986
QJ 2921-1997 Technical requirements for corrosion resistance of zinc coating and cadmium coating has been changed from QJ 489-1986 .
