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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
Analysis of natural gas normal composition by gas chromatography
WITHDRAWN published on 22.2.1989
Selected format:Analysis of liquefied petroleum gas composition by gas chromatography
WITHDRAWN published on 10.10.1988
Selected format:D.C.traction power supply system for subway
WITHDRAWN published on 22.2.1989
Selected format:Grooved pulleys for classical V-belt
WITHDRAWN published on 1.1.1989
Selected format:Grooved pulleys for narrow V-belt
WITHDRAWN published on 22.2.1989
Selected format:Synchronous belt drives for automotive applications —Pulleys
WITHDRAWN published on 22.2.1989
Selected format:-
WITHDRAWN published on 1.1.1989
Selected format:Belt drives—Synchronous belt drives—Automotive pulleys
WITHDRAWN published on 10.1.2002
Selected format:Agricultural machinery double V-belt pulleys
WITHDRAWN published on 22.2.1989
Selected format:Agricultural machinery—Endless hexagonal belts and groove sections of corresponding pulleys
WITHDRAWN published on 1.11.2007
Selected format:Latest update: 2026-04-08 (Number of items: 2 271 105)
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