T/ZZB 2452-2021
Orbit-style pressurized hard-sealing steel ball valves (English Version)
- Standard No.
- T/ZZB 2452-2021
- Language
- Chinese, Available in English version
- Release Date
- 2021
- Published By
- Group Standards of the People's Republic of China
- Latest
- T/ZZB 2452-2021
- Scope
- This document stipulates the structural type and model, basic requirements, technical requirements, test methods, inspection rules, marking, packaging, storage and transportation, and quality commitment of orbital forced hard-sealed steel ball valves. This document is applicable to orbital forced hard-sealing steel ball valves that use crude oil, refined oil and natural gas as transmission media and use flanges as connection methods. The nominal pressure is PN20~PN250, the nominal size is DN100~DN600, and the pressure level is Class150~Class1 500, Nominal size NPS4 ~ NPS24.
T/ZZB 2452-2021 history
- 2021 T/ZZB 2452-2021 Orbit-style pressurized hard-sealing steel ball valves
