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Standards GB - Chinese national standards - Page 30
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 10322.1-2023
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Iron ores—Sampling and sample preparation procedures
Standard published on 6.8.2023
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GB/T 10322.2-2000
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Iron ores--Experimental methods for evaluation of quality variation
Standard published on 5.6.2000
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GB/T 10322.3-2024
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Iron ores—Experimental methods for checking the precision of sampling
Standard published on 28.5.2024
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GB/T 10322.4-2014
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Iron oresExperimental methods for checking the bias of sampling
Standard published on 24.6.2014
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GB/T 10322.5-2024
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Iron ores—Determination of the moisture content of a lot
Standard published on 28.5.2024
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GB/T 10322.6-2022
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Iron ores for blast furnace feedstocks —Determination of the decrepitation index
Standard published on 15.4.2022
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GB/T 10322.7-2016
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Iron ores and direct reduced iron—Determination of size distribution by sieving
Standard published on 30.12.2016
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GB/T 10322.8-2009
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Iron ores - Single-point determination of specific surface area - Nitrogen adsorption method
Standard published on 30.10.2009
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GB/T 10322.9-2023
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Iron ores—Determination of specific surface area—Test method using air-permeability apparatus (Blaine)
Standard published on 7.9.2023
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GB/T 10325-2012
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Shaped refractory products-rule of acceptance,sampling and inspection
Standard published on 5.11.2012
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