HG 20623-1997
Large diameter steel pipe flanges (American system) (English Version)
- Standard No.
- HG 20623-1997
- Language
- Chinese, Available in English version
- Release Date
- 1997
- Published By
- Professional Standard - Chemical Industry
- Status
- 2009-07
- Replace By
- HG/T 20623-2009
- Latest
- HG/T 20623-2009
- Scope
- This standard specifies the types, dimensions, technical requirements and relevant usage regulations for large-diameter steel pipe flanges (American system). This standard is applicable to large-diameter steel pipe flanges with nominal pressure PN2.0MPa (Class 150) ~ 15.0MPa (Class 900).
HG 20623-1997 history
- 2009 HG/T 20623-2009 Large diameter steel pipe flanges(Class designated)
- 1997 HG 20623-1997 Large diameter steel pipe flanges (American system)
HG 20623-1997 Large diameter steel pipe flanges (American system) was changed to HG/T 20623-2009 Large diameter steel pipe flanges(Class designated).
