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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
Indicators for national forest city
WITHDRAWN published on 25.3.2019
Selected format:Straight thread long connector—Assembly
WITHDRAWN published on 17.6.1983
Selected format:Straight thread long connector—Body
WITHDRAWN published on 17.6.1983
Selected format:Male long connector—Assembly
WITHDRAWN published on 17.6.1983
Selected format:Male long connector—Body
WITHDRAWN published on 17.6.1983
Selected format:Union—Assembly
WITHDRAWN published on 17.6.1983
Selected format:Union—Body
WITHDRAWN published on 17.6.1983
Selected format:Transportation—Digital certificate format
WITHDRAWN published on 10.5.2019
Selected format:Straight thread elbow—Assembly
WITHDRAWN published on 17.6.1983
Selected format:Straight thread elbow—Body
WITHDRAWN published on 17.6.1983
Selected format:Latest update: 2025-12-16 (Number of items: 2 252 193)
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