NB/T 47022-2012
B-type socket-weld flange (English Version)
- Standard No.
- NB/T 47022-2012
- Language
- Chinese, Available in English version
- Release Date
- 2012
- Published By
- Professional Standard - Energy
- Latest
- NB/T 47022-2012
- Replace
- JB/T 4702-2000
- Scope
- This standard specifies the structural type and series dimensions of type B flat welding flanges for steel pressure vessels. This standard is applicable to type B flat welding flanges of steel pressure vessels with nominal pressures from 0.25MPa to 4.0MPa and operating temperatures above -20°C to 350°C. This standard applies to corrosion margin ≤ 2mm. When the corrosion margin is 3mm, the thickness of the pup joint should be increased by 2mm.
NB/T 47022-2012 Referenced Document
- NB/T 47020 Type and specification for pressure vessel flanges
- NB/T 47024 Nonmetallic gaskets
- NB/T 47025 Spiral wound gaskets
- NB/T 47026 Double-jacketed gaskets
- NB/T 47027 Stud blots & nuts for body flange
NB/T 47022-2012 history
- 2012 NB/T 47022-2012 B-type socket-weld flange
- 2000 JB/T 4702-2000 B-type socket-weld flange
NB/T 47022-2012 B-type socket-weld flange has been changed from JB/T 4702-2000 B-type socket-weld flange.
