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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
Chains for bicycles
WITHDRAWN published on 1.1.1983
Selected format:Cycle chains—Characteristics and test methods
WITHDRAWN published on 16.1.2002
Selected format:Saddles for bicycles
WITHDRAWN published on 1.1.1983
Selected format:Front and rear rim brakes for bicycles
WITHDRAWN published on 1.1.1983
Selected format:Caliper brakes for bicycles
WITHDRAWN published on 1.1.1983
Selected format:Front block brakes for bicycles
WITHDRAWN published on 1.1.1983
Selected format:Internal expanding brakes for bicycles
WITHDRAWN published on 1.1.1983
Selected format:Commercial gas-burning appliance
WITHDRAWN published on 6.2.2018
Selected format:Back pedal brakes for bicycles
WITHDRAWN published on 1.1.1983
Selected format:Band brakes for bicycles
WITHDRAWN published on 1.1.1983
Selected format:Latest update: 2025-12-20 (Number of items: 2 252 706)
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