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Standards GB - Chinese national standards - Page 5029
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 5059.5-2014
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FerromolybdenumDetermination of silicon contentSulphuric acid dehydration gravimetric method and molybdenum blue spectrophotometric method
Standard published on 27.3.2014
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GB/T 5059.6-2007
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Ferromolybdenum - Determination of phosphorus content - Molybdobismuthylphosphoric blue spectrophotometric method and the molybdenum blue spectrophotometrc method
Standard published on 11.9.2007
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GB/T 5059.7-2014
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Ferromolybdenum—The determination of carbon content—Infrared absorption method
Standard published on 27.3.2014
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GB/T 5059.9-2008
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Ferromolybdenum - Determination of sulfur content - The infrared absorption method and the combustion-iodate volumetric method
Standard published on 11.9.2008
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GB/T 50590-2010
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Technical code for anticorrosion engineering of vinyl ester resins
Standard published on 31.5.2010
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GB 50591-2010
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Code for construction and acceptance of cleanroom
Standard published on 15.7.2010
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GB/T 50593-2010
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Standard for drawings undarground mining
Standard published on 15.7.2010
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GB/T 50594-2010
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Standard for water function zoning
Standard published on 3.11.2010
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GB 50595-2010
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Code for energy conservation design of non-ferrous metal mines
Standard published on 15.7.2010
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