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Standards GB - Chinese national standards - Page 91
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
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GB/T 11136-1989
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Petroleum hydrocarbons--Determination of bromine index--Electrometric titration
Standard published on 31.3.1989
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GB/T 11136-2025
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Determination of bromine index for petroleum hydrocarbons—Electrometric titration
Execute Date: may 2026
Standard published on 5.10.2025
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GB/T 11137-1989
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Black petroleum products--Determination of kinematic viscosity (reverse-flow method) and calculation of dynamic viscosity
Standard published on 31.3.1989
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GB/T 11138-1994
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Industrial aromatic hydrocarbons--Test method of copper corrosion
Standard published on 23.8.1994
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GB/T 11139-1989
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Distillate fuels--Calculation of cetane index
Standard published on 31.3.1989
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GB/T 1114-2016
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shell end mills
Standard published on 24.2.2016
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GB/T 11140-2008
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Standard test method for sulfur in petroleum products by wavelength dispersive X - ray fluorescence spectrometry
Standard published on 25.8.2008
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GB/T 11141-2014
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light olefins for industrial useDetermination of trace sulfur
Standard published on 8.7.2014
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GB/T 11142-1989
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Insulating oils--Determination ofgassing under electrical stress and ionization
Standard published on 31.3.1989
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GB/T 11142-2025
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Determination for gassing properties of insulating oil under electrical stress and ionization
Execute Date: may 2026
Standard published on 5.10.2025
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