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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
Specification of the 57Co Mossbauer sources
WITHDRAWN published on 1.1.1989
Selected format:Plutonium-238 sources for X-ray fluorescence analysis
WITHDRAWN published on 1.1.1989
Selected format:General specification for eight-wheel continuous vialog
WITHDRAWN published on 1.1.1989
Selected format:Specifications for the strenth tester of the stabilized soil
WITHDRAWN published on 1.1.1989
Selected format:Specifications for the core drilling rigs of the cement concrete
WITHDRAWN published on 1.1.1989
Selected format:-
WITHDRAWN published on 1.1.1989
Selected format:Tolerances of form and of position--Symbols and methods of indication on mechanical drawings
WITHDRAWN published on 1.1.1980
Selected format:Geometrical tolerancing—Generalities, definitions, symbols, indications on drawings
WITHDRAWN published on 18.12.1996
Selected format:Geometrical Product Specifications(GPS)—Geometrical tolerancing—Tolerances of form, orientation, location and run-out
WITHDRAWN published on 28.2.2008
Selected format:The requirements for urban optical fiber cable systems joined to national public telecommunication network
WITHDRAWN published on 25.10.1989
Selected format:Latest update: 2025-11-12 (Number of items: 2 243 625)
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