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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
Test method for modulus of rupture of refractory products at elevated temperatures
WITHDRAWN published on 29.3.1982
Selected format:Refractory products—Determination of modulus of rupture at elevated temperatures
WITHDRAWN published on 9.6.2004
Selected format:Test method for the defects of glass—Photoelastic scanning method
WITHDRAWN published on 27.11.2013
Selected format:Cranes—Proof of competence of steel structures
WITHDRAWN published on 27.11.2013
Selected format:Short link chains for lifting purposes—Grand TH,fine tolerance for manually operated chain hoists
WITHDRAWN published on 27.11.2013
Selected format:Short link chains for lifting purposes—Grand VH,fine tolerance for manually operated chain hoists
WITHDRAWN published on 27.11.2013
Selected format:Automated guided vehicle(AGV)—General rule of design
WITHDRAWN published on 27.11.2013
Selected format:Ordinary alumino-silicate refractory fiber felts
WITHDRAWN published on 29.3.1982
Selected format:Refractory—Ceramic fibre and the products
WITHDRAWN published on 30.9.2006
Selected format:Refractory—Ceramic fibre and the products
WITHDRAWN published on 30.9.2006
Selected format:Latest update: 2026-03-15 (Number of items: 2 266 660)
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