HG 21516-1995
Rotary cover plate flat welding flange manhole (English Version)
- Standard No.
- HG 21516-1995
- Language
- Chinese, Available in English version
- Release Date
- 1995
- Published By
- Professional Standard - Chemical Industry
- Status
- 2006-01
- Replace By
- HG/T 21516-2005
- Latest
- HG/T 21516-2014
- Scope
- This standard specifies the type, basic parameters, dimensions, technical requirements and relevant usage regulations of carbon steel rotary cover flat welding flange manholes. This standard applies to rotary cover-type flat welding flange manholes with a nominal pressure PN less than and equal to 0.6MPa and an operating temperature limited to the range specified in Table 3-2 according to the material category. Note: The operating temperatures in Table 3-2 only apply to the pressure-bearing parts of the manhole, excluding gaskets. The operating temperature of the gasket should be determined according to the corresponding gasket standard.
HG 21516-1995 history
- 2014 HG/T 21516-2014 Plate flange manholes with hinged cover
- 2005 HG/T 21516-2005 Rotary cover plate flat welding flange manhole
- 1995 HG 21516-1995 Rotary cover plate flat welding flange manhole
HG 21516-1995 Rotary cover plate flat welding flange manhole was changed to HG/T 21516-2005 Rotary cover plate flat welding flange manhole.
