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Standards GB - Chinese national standards - Page 430
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 14640-2017
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Determination of potassium and sodium in water for industrial circulating cooling system and boiler
Standard published on 1.11.2017
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GB/T 14642-2009
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Industrial circulating cooling water and boiler water - Determination of fluoridechloridephosphatenitritenitrate and sulfate - Ion chromatography
Standard published on 18.5.2009
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GB/T 14643.1-2009
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Examination of bacteria and algae in industrial circulating cooling water - Part 1: Examination of bacteria formed deposits - Standard of plate count
Standard published on 18.5.2009
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GB/T 14643.2-2009
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Examination of bacteria and algae in industrial circulating cooling water - Part 2: Examination of soil micro-bioti - Standard of plate count
Standard published on 18.5.2009
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GB/T 14643.3-2009
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Examination of bacteria and algae in industrial circulating cooling water - Part 3: Examination of slime formed fungi - Standard of plate count
Standard published on 18.5.2009
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GB/T 14643.4-2009
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Examination of bacteria and algae in industrial circulating cooling water - Part 4: Examination of soil fangi - Standard of plate count
Standard published on 18.5.2009
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GB/T 14643.5-2009
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Examination of bacteria and algae in industrial circulating cooling water - Part 5: Examination of sulfate-reducing bacteria - MPN test
Standard published on 18.5.2009
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GB/T 14643.6-2009
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Examination of bacteria and algae in industrial circulating cooling water - Part 6: Examination of iron bacteria - MPN test
Standard published on 18.5.2009
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GB/T 14644-2014
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TextilesBurning behaviourThe 45°test determination of flame spread rate
Standard published on 30.9.2014
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GB/T 14645-2014
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TextilesBurning behaviourThe 45°test determination of damaged area and ignition times
Standard published on 30.9.2014
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