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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
Mechanical drawings--Dimensioning
WITHDRAWN published on 11.7.1984
Selected format:Mechanical drawings--Indication of tolerances for size and of fits
WITHDRAWN published on 11.7.1984
Selected format:-
WITHDRAWN published on 1.1.1984
Selected format:Mechanical drawings--Conventional representation of gears
WITHDRAWN published on 11.7.1984
Selected format:Mechanical drawings--Conventional representation of springs
WITHDRAWN published on 11.7.1984
Selected format:Mechanical drawings—Representation of seals for dynamic application
WITHDRAWN published on 18.12.1996
Selected format:Mechanical drawings—Representation of rolling bearings
WITHDRAWN published on 12.8.1998
Selected format:Refined paraffin wax
WITHDRAWN published on 6.8.1993
Selected format:Fully refined paraffin wax
WITHDRAWN published on 2.9.2010
Selected format:Mechanical drawings--Graphical symbols for kinematic diagrams
WITHDRAWN published on 11.7.1984
Selected format:Latest update: 2025-09-17 (Number of items: 2 234 360)
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