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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
Synchronous belt--Test method for fabric stripping strength
WITHDRAWN published on 1.1.1989
Selected format:Synchronous belt--Test method for cord pull-out strength
WITHDRAWN published on 1.1.1989
Selected format:Fabrics coated with rubber or plastics--Determination of the coating adhesion
WITHDRAWN published on 1.1.1989
Selected format:Rubber or plastics coated fabrics--Determination of flexibility--Flat loop method
WITHDRAWN published on 1.1.1989
Selected format:-
WITHDRAWN published on 1.1.1989
Selected format:Carbon black--Determination of specific surface area--Nitrogen adsorption method
WITHDRAWN published on 29.6.1999
Selected format:Carbon black—Determination of total and external surface area by nitrogen adsorption
WITHDRAWN published on 11.10.2003
Selected format:Standard method for carbon black--Improving test reproducibility using ASTM reference blacks
WITHDRAWN published on 31.3.1989
Selected format:Standard method for carbon black—Improving test reproducibility using ASTM reference blacks
WITHDRAWN published on 29.5.2002
Selected format:Chemical reagent--General rules for the flameless(graphite furnace) atomic absorption spectrometry
WITHDRAWN published on 31.3.1989
Selected format:Latest update: 2026-04-06 (Number of items: 2 271 069)
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