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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 rules and regulations for analysis of iron ores
WITHDRAWN published on 13.5.2008
Selected format:Analysis of natural gas by gas chromatography
WITHDRAWN published on 15.8.1992
Selected format:Analysis of natural gas by gas Chromatography
WITHDRAWN published on 18.6.2003
Selected format:Analysis of natural gas composipion—Gas chromatography
WITHDRAWN published on 5.12.2014
Selected format:Analysis of natural gas composition—Gas chromatography
WITHDRAWN published on 5.12.2014
Selected format:Classification of town gas
WITHDRAWN published on 15.8.1992
Selected format:Classification and essential property of city gas
WITHDRAWN published on 12.9.2006
Selected format:Manufactured gas
WITHDRAWN published on 15.8.1992
Selected format:Electromegnetic environment requirements for sea long and middle range radionavigation stations and monitors
WITHDRAWN published on 19.8.1992
Selected format:Requirements of the electromagnetic environment for short-wave radio direction finding stations
WITHDRAWN published on 19.8.1992
Selected format:Latest update: 2026-06-16 (Number of items: 2 283 261)
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