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Standards GB - Chinese national standards - Page 5066
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 646-2011
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Chemical reagent - Potassium chloride
Standard published on 12.5.2011
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GB/T 6461-2002
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Methodsfor corrosion testing of metallic and other inorganic coatings on metallic substrates--Rating of test specimens and manufactured articles subjected to corrosion tests
Standard published on 11.9.2002
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GB/T 6462-2025
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Metallic and oxide coatings—Measurement of coating thickness—Microscopical method
Standard published on 31.10.2025
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GB/T 6463-2005
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Metallic and other inorganic coatings-Review of methods of measurement of thickness
Standard published on 23.6.2005
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GB/T 6465-2008
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Metallic and other non-organic coatings - Corrodkote corrosion test(CORR test)
Standard published on 19.6.2008
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GB/T 6466-2008
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Electrodeposited chromium coatings - Electrolytic corrosion testing (EC test)
Standard published on 19.6.2008
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GB/T 6467-2010
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The involute artifact of gear
Standard published on 10.1.2011
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GB/T 6468-2010
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The helix artifact of gear
Standard published on 10.1.2011
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GB/T 647-2011
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Chemical reagent - Potassium nitrate
Standard published on 12.5.2011
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GB/T 6472-2023
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Vertical internal broaching machines—Testing of the accuracy
Standard published on 7.9.2023
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