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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 specification of Steel die forgings
WITHDRAWN published on 28.11.2003
Selected format:Tolerances and machining allowances of steel die forgings
WITHDRAWN published on 14.6.1990
Selected format:Tolerances and machining—Allowances of steel die forging
WITHDRAWN published on 28.11.2003
Selected format:Classification of forging functions
WITHDRAWN published on 14.6.1990
Selected format:Classification of forging functions
WITHDRAWN published on 21.7.2005
Selected format:Networking technical requirement for the domestic satellite communication systems
WITHDRAWN published on 16.6.1990
Selected format:Technical parameters for short distance optical cable transmission of broadcasting and television
WITHDRAWN published on 16.6.1990
Selected format:Guideline for the work of complex standardization—Principle and method
WITHDRAWN published on 18.6.1990
Selected format:Guideline for the work of complex standardization—General requirements of complex standardization for industrial products
WITHDRAWN published on 18.6.1990
Selected format:Guideline for the work of complex standardization—General requirements of complex standardization for agriculture products
WITHDRAWN published on 18.6.1990
Selected format:Latest update: 2025-10-20 (Number of items: 2 239 217)
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