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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
Broaches shanks—Part 2:Round shanks
WITHDRAWN published on 10.2.2004
Selected format:Round follower end for broaches--Types and main dimensions
WITHDRAWN published on 16.8.1983
Selected format:Broaches shanks—Part 3:Round follower end
WITHDRAWN published on 10.2.2004
Selected format:General principles of measuring methods of CMOS circuits for semiconductor integrated circuits
WITHDRAWN published on 1.1.1983
Selected format:Families and products of interface circuits for semiconductor integrated circuits
WITHDRAWN published on 1.1.1983
Selected format:Electrical apparatus for explosive gas atmospheres—Part 1:General requirements
WITHDRAWN published on 3.1.2000
Selected format:Explosive atmospheres—Part 1:Equipment—General requirements
WITHDRAWN published on 9.8.2010
Selected format:Electrical apparatus for explosive atmospheres--Hermetically sealed electrical apparatus "h"
WITHDRAWN published on 27.5.1991
Selected format:Electrical apparatus for explosive atmospheres-Method of test for ascertainment of maximum experimental safe gap
WITHDRAWN published on 27.5.1991
Selected format:Explosive atmospheres—Part 11:Equipment protection by flameproof enclosures “d”—Method of test for ascertainment of maximum experimental safe gap
WITHDRAWN published on 29.10.2008
Selected format:Latest update: 2026-06-14 (Number of items: 2 282 206)
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