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Standards GB are Chinese national standards, which are issued by China's Standardization Administration Office (SAC).
Chinese national standards are used all over China commonly labeled as GB standards. They determine the united production requirements regarding product safety and quality .
GB standards are often modified or created according to the international standards of ISO, IEC or any other international level.
Although, they are largely harmonized, GB standards may differ from international standards .
Approximately 15% of all GB standards are obligatory and they can be identified according to the prefix GB, after which the code of the standards follows:
GB – Obligatory national standards
GB/T – Optional national standards
GB/Z – National steering technical document
General purpose industrial valves - Casting iron globe valves and lift check valves
Standard published on 25.12.2006
Selected format:
General purpose industrial valves—Casting iron globe valves and lift check valves
Execute Date: may 2026
Standard published on 31.10.2025
Selected format:Bolted bonnet steel gate valves for petroleum and natural gas industries
Standard published on 18.10.2019
Selected format:Steel globe valves and lift check valve for petroleum, petrochemical and allied industries
Standard published on 18.4.2007
Selected format:
Steel globe valves and lift check valve for petroleum, petrochemical and allied industries
Execute Date: may 2026
Standard published on 31.10.2025
Selected format:Steel swing check valve for petroleum, petrochemical and allied industries
Standard published on 2.2.2008
Selected format:
Steel swing check valve for petroleum, petrochemical and allied industries
Execute Date: may 2026
Standard published on 31.10.2025
Selected format:Steel ball valves for petroleum, petrochemical and allied industries
Standard published on 9.3.2021
Selected format:Flanged and wafer resilient seal butterfly valves
Standard published on 23.12.2008
Selected format:Industrial valves - Diaphragm valves made of metallic materials
Standard published on 23.12.2008
Selected format:Latest update: 2026-01-02 (Number of items: 2 253 797)
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