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Standards GB - Chinese national standards - Page 8447
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 6730.55-2004
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Iron ores—Determination of tin content—Flame atomic absorption spectrometric method
WITHDRAWN published on 24.3.2004
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GB/T 6730.56-2004
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Iron ores—Determination of aluminum content—Flame atomic absorption spectrometric method
WITHDRAWN published on 24.3.2004
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GB/T 6730.58-2004
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Iron ores—Determination of vanadium content—Flame atomic absorption spectrometric methods
WITHDRAWN published on 24.3.2004
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GB/T 6730.59-2005
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Iron ores—Determination of manganese content—Flame atomic absorption spectrometric method
WITHDRAWN published on 21.7.2005
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GB/T 6730.6-1986
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Methods for chemical analysis of iron ores The ferric chloride-sodium acetate volumetric method for the determination of metallic iron content
WITHDRAWN published on 19.8.1986
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GB/T 6730.60-2005
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Iron ores—Determination of nickel content—Flame atomic absorption spectrometric method
WITHDRAWN published on 21.7.2005
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GB/T 6730.61-2005
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Iron ores—Determination of carbon and sulfur content—High frequency combustion with infrared absorption method
WITHDRAWN published on 21.7.2005
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GB/T 6730.63-2006
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Iron ores—Determination of aluminum,calcium,magnesium,manganese,phosphorus,silicon and titanium content—Inductively coupled plasma atomic emission spectrometric method
WITHDRAWN published on 16.8.2006
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GB/T 6730.64-2007
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Iron ores—Determination of water soluble chloride content—Ion-selective electrode method
WITHDRAWN published on 14.8.2007
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GB/T 6730.7-1986
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Methods for chemical analysis of iron ores The sulfosalicylic acid photometric method for the determination of metallic iron content
WITHDRAWN published on 19.8.1986
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