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Standards GB - Chinese national standards - Page 8257
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 5069.5-2001
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Chemical analysis of magnesia and magnesia-alumina refractory materials—Flame atomic absorption spectrometric method for determination of iron oxide content
WITHDRAWN published on 7.12.2001
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GB/T 5069.6-1985
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Magnesite refractories--Determination of aluminium oxide--EDTA volumetric method
WITHDRAWN published on 1.1.1985
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GB/T 5069.6-2001
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Chemical analysis of magnesia and magnesia-alumina refractory materials—Chromazurol S photometric method for determination of aluminium oxide content
WITHDRAWN published on 7.12.2001
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GB/T 5069.7-1985
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Magnesite refractories--Determination of titanium dioxide content--Diantipyrylmethane photometric method
WITHDRAWN published on 1.1.1985
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GB/T 5069.7-2001
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Chemical analysis of magnesia and magnesia-alumina refractory materials—EDTA titrametric method for determination of aluminium oxide content
WITHDRAWN published on 17.12.2001
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GB/T 5069.8-1985
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Magnesite refractories--Determination of calcium oxide content--EGTA volumetric method
WITHDRAWN published on 1.1.1985
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GB/T 5069.8-2001
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Chemical analysis of magnesia and magnesia-alumina refractory materials—Diantipyrylmethane photometric method for determination of titanium dioxide content
WITHDRAWN published on 17.12.2001
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GB/T 5069.9-1985
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Magnesite refractories--Determination of magnesium oxide content--CyDTA volumetric method
WITHDRAWN published on 1.1.1985
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GB/T 5069.9-2001
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Chemical analysis of magnesia and magnesia-alumina refractory materials—Hydrogen peroxide photometric method for determination of titanium dioxide content
WITHDRAWN published on 17.12.2001
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GB/T 507-1986
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Insulating oils--Determination of the dielectric strength
WITHDRAWN published on 25.6.1986
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