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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 principle for rational lubrication technology
WITHDRAWN published on 15.8.1992
Selected format:Natural gas—Sampling guidelines
WITHDRAWN published on 17.5.1999
Selected format:Natural gas sampling guidelines
WITHDRAWN published on 5.11.2012
Selected format:Analytical methods of iron ores--Generality and common rules
WITHDRAWN published on 6.2.1978
Selected format: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WITHDRAWN published on 13.5.2008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WITHDRAWN published on 15.8.1992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WITHDRAWN published on 18.6.2003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WITHDRAWN published on 5.12.2014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WITHDRAWN published on 5.12.2014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WITHDRAWN published on 15.8.1992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:Latest update: 2026-01-25 (Number of items: 2 257 482)
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