QJ 500A-1998
Carbon steel, alloy structural steel forging technical conditions (English Version)
- Standard No.
- QJ 500A-1998
- Language
- Chinese, Available in English version
- Release Date
- 1998
- Published By
- Professional Standard - Aerospace
- Status
- Replace By
- QJ 500B-2014
- Replace
- QJ 500-1989
QJ 500A-1998 history
- 1970 QJ 500-1989 Specifications for carbon steel and alloy structural steel forgings
- 1970 QJ 500-1980 Specifications for carbon steel and alloy structural steel forgings
QJ 500A-1998 Carbon steel, alloy structural steel forging technical conditions has been changed from QJ 500-1989 Specifications for carbon steel and alloy structural steel forgings.
QJ 500A-1998 Carbon steel, alloy structural steel forging technical conditions was changed to QJ 500B-2014 Specification for carbon structural steel and structural alloy steel forgings.
