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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
Explosive atmospheres—Part 11:Material characteristics for gas and vapour classification—Test methods and data
WITHDRAWN published on 29.12.2017
Selected format:Electrical apparatus for explosive atmospheres—Classification of gases or vapours with air according to their maximum experimental safe gaps and minimum igniting currents
WITHDRAWN published on 27.5.1991
Selected format:Explosive atmospheres—Part 12:Classification of mixtures of gases or vapours with air according to their maximum experimental safe gaps and minimum igniting current
WITHDRAWN published on 29.10.2008
Selected format:Electrical apparatus for explosive gas atmospheres—Part 13:Repair and overhaul for apparatus used in explosive gas atmospheres
WITHDRAWN published on 30.12.1997
Selected format:Explosive atmospheres—Part 13:Equipment repair,overhaul and reclamation
WITHDRAWN published on 17.12.2013
Selected format:Electrical apparatus for explosive gas atmospheres—Part 14:Classification of hazardous areas
WITHDRAWN published on 17.10.2000
Selected format:Electrical apparatus for explosive gas atmospheres—Part 15:Electrical installations in hazardous areas (other than mines)
WITHDRAWN published on 17.10.2000
Selected format:Explosive atmospheres—Part 15:Electrical installations design,selection and erection
WITHDRAWN published on 29.12.2017
Selected format:Electrical apparatus for explosive gas atmospheres—Part 16:Inspection and maintenance of electrical installation(other than mines)
WITHDRAWN published on 30.4.2006
Selected format:Explosive atmospheres—Part 16:Electrical installations inspection and maintenance
WITHDRAWN published on 29.12.2017
Selected format:Latest update: 2026-06-14 (Number of items: 2 282 206)
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