Group Standards of the People's Republic of China CN / TUANTI
Latest
T/WZBF 041-2024
Scope
This document specifies the terms and definitions, structural types, technical requirements, materials, test methods, inspection rules, markings and supply requirements of forced sealing ball valves. This document is applicable to nominal pressures of PN16 to PN400, nominal sizes of DN25 to DN600, or pressure levels of Class150 to Class2500, and nominal sizes of NPS1 to NPS24; applicable temperatures are -46°C to 425°C; flange ends and welding ends are mandatory Manufacturing of sealed ball valves.