JJF 1228-1990
30~120 cubic meters / hour gas flow benchmark operating technical specifications (English Version)
- Standard No.
- JJF 1228-1990
- Language
- Chinese, Available in English version
- Published By
- National Metrological Technical Specifications of the People's Republic of China
- Status
- 2009-10
- Replace By
- JJF 1228-2009
- Latest
- JJF 1228-2009
JJF 1228-1990 history
- 2009 JJF 1228-2009 Calibration Specification for Sound Powder Meters
- 1970 JJF 1228-1990 30~120 cubic meters / hour gas flow benchmark operating technical specifications
