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Standards GB - Chinese national standards - Page 5330
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 9966.16-2021
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Test methods for natural stone—Part 16: Determination of linear thermal expansion coefficient
Standard published on 30.4.2021
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GB/T 9966.17-2021
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Test methods for natural stone—Part 17: Determination of resistance to salt crystallization
Standard published on 30.4.2021
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GB/T 9966.18-2021
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Test methods for natural stone—Part 18: Petrographic examination
Standard published on 30.4.2021
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GB/T 9966.2-2020
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Test methods for natural stone—Part 2:Determination of dry,wet and after freezing flexural strength
Standard published on 6.3.2020
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GB/T 9966.3-2020
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Test methods for natural stone—Part 3:Determination of water absorption,bulk density,true density and true porosity
Standard published on 6.3.2020
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GB/T 9966.4-2020
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Test methods for natural stone—Part 4:Determination of abrasion resistance
Standard published on 6.3.2020
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GB/T 9966.5-2020
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Test methods for natural stone—Part 5:Determination of hardness
Standard published on 6.3.2020
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GB/T 9966.6-2020
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Test methods for natural stone—Part 6:Determination of acid resistance
Standard published on 6.3.2020
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GB/T 9966.7-2020
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Test methods for natural stone—Part 7:Determination of strength for individual stone anchorages
Standard published on 6.3.2020
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GB/T 9966.8-2025
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Test methods for natural stone—Part 8: Determination of test for structural performance of dimension stone cladding systems by uniform static pressure difference
Standard published on 30.6.2025
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