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Standards GB - Chinese national standards - Page 8260
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 5070.8-2002
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Chemical analysis of magnesia chromite refractories—Part 8:Determination of magnesium oxide—CyDTA volumetric method
WITHDRAWN published on 31.12.2002
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GB/T 5070.9-1985
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Magnesite-chrome refractories--Determination of manganese oxide content--Atomic absorption spectrophotometric method
WITHDRAWN published on 17.4.1985
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GB/T 5070.9-2002
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Chemical analysis of magnesia chromite refractories—Part 9:Determination of magnesium oxide—EDTA volumetric method
WITHDRAWN published on 31.12.2002
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GB/T 50700-2011
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Technical renovtion code for small hydropower station
WITHDRAWN published on 12.5.2011
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GB 5071-1985
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WITHDRAWN published on 1.1.1985
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GB/T 5071-1997
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Refractory materials—Determination of true density
WITHDRAWN published on 11.11.1997
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GB/T 5072-1985
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Test method for cold crushing strength of dense shaped refractory products
WITHDRAWN published on 1.1.1985
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GB/T 5072-2008
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Refractories—Determination of cold compressive strength
WITHDRAWN published on 26.6.2008
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GB/T 5072.1-1998
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Dense, shaped refractory products—Determination of cold compressive strength—Part 1:Referee test without packing
WITHDRAWN published on 7.12.1998
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GB/T 5072.2-2004
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Dense shaped refractory products—Determination of cold compressive strength—Part 2:Test with packing
WITHDRAWN published on 9.6.2004
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