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Standards GB - Chinese national standards - Page 8255
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 5066-1985
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Single hot-dip zinc-coated carbon steel sheets
WITHDRAWN published on 1.1.1985
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GB 5067-1985
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Alloy structural steel sheets
WITHDRAWN published on 1.1.1985
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GB/T 5068-1999
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Axles steel for railway locomotive and wagons
WITHDRAWN published on 23.11.1999
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GB/T 5069-2007
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Chemical analysis of magnesia-alumina refractories
WITHDRAWN published on 18.4.2007
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GB/T 5069-2015
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Chemical analysis of magnesia-alumina refractories
WITHDRAWN published on 10.12.2015
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GB/T 5069.1-1985
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Magnesite refractories--Determination of loss content on ignition--Gravimetric method
WITHDRAWN published on 1.1.1985
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GB/T 5069.1-2001
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Chemical analysis of magnesia and magnesia-alumina refractory materials—Gravimetric method for determination of loss on ignition
WITHDRAWN published on 7.12.2001
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GB/T 5069.10-1985
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Magnesite refractories--Determination of manganese oxide content--Atomic absorption spectrophotometric method
WITHDRAWN published on 1.1.1985
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GB/T 5069.10-2001
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Chemical analysis of magnesia and magnesia-alumina refractory materials—Flame atomic absorption spectrometric method for determination of calcium oxide content
WITHDRAWN published on 7.12.2001
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GB/T 5069.11-1985
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Magnesite refractories--Determination of potassium oxide and sodium oxide contents--Atomic absorption spectrophotometric method
WITHDRAWN published on 1.1.1985
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