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Standards GB - Chinese national standards - Page 137
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 11836-2023
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Concrete and reinforced concrete sewer pipes
Standard published on 17.3.2023
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GB/T 11837-2009
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Test methods of the concrete compressive strength of concrete pipes for water
Standard published on 9.3.2009
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GB/T 11839-2008
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Determination of boron in uranium dioxide pellets by curcumin extraction spectrophotometric method
Standard published on 19.6.2008
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GB/T 1184-1996
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Geometrical tolerancing--Geometrical tolerance for features without individual tolerance indications
Standard published on 18.12.1996
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GB/T 11840-2025
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Determination of moisture in uranium dioxide powder and pellets
Standard published on 1.8.2025
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GB/T 11841-1989
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Uraniumdioxide powder and pellets--Determination of uranium--Ferrous sulfate reduction-potassium dichromate oxidation titrimatric method
Standard published on 25.10.1989
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GB/T 11842-2025
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Determination of oxygen to uranium atomic ratio in uranium dioxide powder and pellets—Thermogravimetric method
Standard published on 25.4.2025
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GB/T 11843-2025
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Determination of nitrogen in uranium dioxide powder and pellets—Spectrophotometry
Standard published on 5.10.2025
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GB/T 11844-2015
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Determination of fluorine and chlorine in uranium dioxide powder and pellets—Pyrohydrolysis ion-selective electrode method
Standard published on 3.7.2015
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GB/T 11846-2015
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Determination of silicon in uranium dioxide powder and pellets by spectrophotometry
Standard published on 3.7.2015
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