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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
Matrix to superconductor volume ratio measurement—Copper to superconductor volume ratio of Cu/Nb-Ti composite superconductors
WITHDRAWN published on 15.12.2008
Selected format:Magnesia carbon brick
WITHDRAWN published on 15.12.2008
Selected format:Magnesia carbon brick
WITHDRAWN published on 15.12.2008
Selected format:Spare parts and components of fixtures--Technical requirements
WITHDRAWN published on 1.1.1991
Selected format:Refractory castables for reheating furnaces
WITHDRAWN published on 15.12.2008
Selected format:Refractory castables for reheating furnaces
WITHDRAWN published on 15.12.2008
Selected format:Water treatment reagent—General rules for the determination of density
WITHDRAWN published on 23.12.2008
Selected format:Reclaimed wastewater—Determination of chemical oxygen demand—Potassium dichromate method
WITHDRAWN published on 23.12.2008
Selected format:-
WITHDRAWN published on 1.1.1984
Selected format:Etch test for macrostructure and defect of steels
WITHDRAWN published on 22.6.1991
Selected format:Latest update: 2026-01-22 (Number of items: 2 257 357)
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