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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
Belt drives—V-ribbed belts, joined V-belts and V-belts including wide section belts and hexagonal belts—Electrical conductivity of antistatic belts: Characteristics and methods of test
Standard published on 20.8.2021
Selected format:Synchronous belt drives - Automotive belts - Determination of physical properties
Standard published on 5.11.2012
Selected format:Carbon black—Determination of total and external surface areaNitrogen adsorption test method
Standard published on 31.12.2014
Selected format:Chemical reagent - General method for the determination of metals by solvent extraction followed by AAS
Standard published on 26.9.2007
Selected format:Primary chemical
Standard published on 31.3.1989
Selected format:Primary chemical - Potassium hydrogen phthalate
Standard published on 18.6.2008
Selected format:Primary chemical - Potassium dichromate
Standard published on 18.6.2008
Selected format:Primary chemical - Potassium chloride
Standard published on 18.6.2008
Selected format:Primary chemical - Sodium chloride
Standard published on 18.6.2008
Selected format:Primary chemical - Ethylenediamine tetraacetic acid disodium salt
Standard published on 18.6.2008
Selected format:Latest update: 2025-08-21 (Number of items: 2 213 168)
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