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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
Rubber compounding ingredients—Pelletized carbon black—Part 1Determination of pour density
Standard published on 31.12.2013
Selected format:Pelletized carbon black for rubber—Part 2: Determination of fines content and pellet attrition
Standard published on 14.6.2016
Selected format:Rubber compounding ingredients—Pelletized carbon black—Part 4Determination of mass strength
Standard published on 31.12.2013
Selected format:Rubber compounding ingredients—Pelletized carbon black—Part 5Determination of pellet size distribution
Standard published on 31.12.2013
Selected format:Rubber compounding ingredientsPelletized carbon blackPart 6Determination of individual pellet crushing strength
Standard published on 31.12.2013
Selected format:Interference calculation methods of coast radiotelephone station operating in high frequency bands
Standard published on 30.12.1993
Selected format:The specifications of encoding parameters of digital television for studio
Standard published on 30.12.1993
Selected format:Transformers and inductors for use in electronic and telecommunication equipment - Part 1Generic specification
Standard published on 31.12.2012
Selected format:Transformers and inductors for use in electronic and telecommunication equipment - Part 3Sectional specification for power transformers on the basis of the capability approval procedure
Standard published on 31.12.2012
Selected format:Transformers and inductors for use in electronic and telecommunication equipment - Part 4: Sectional specification for power transformers for switched mode power supplies (SMPS) on the basis of the capability approval procedure
Standard published on 31.12.2012
Selected format:Latest update: 2026-04-19 (Number of items: 2 274 482)
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