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Standards GB - Chinese national standards - Page 7045
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 231-1984
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Metallic materials--Brinell hardness test
WITHDRAWN published on 9.4.1984
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GB/T 231.1-2002
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Metallic materials—Brinell hardness test—Part 1:Test method
WITHDRAWN published on 31.12.2002
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GB/T 231.1-2009
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Metallic materials—Brinell hardness test—Part 1:Test method
WITHDRAWN published on 25.6.2009
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GB/T 231.2-2002
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Metallic Brinell hardness test—Part 2:Verification and calibration of hardness testers
WITHDRAWN published on 25.11.2002
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GB/T 231.2-2012
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Metallic materials—Brinell hardness test—Part 2:Verification and calibration of testing machines
WITHDRAWN published on 31.12.2012
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GB/T 231.3-2002
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Metallic Brinell hardness test—Part 3:Calibration of hardness reference blocks
WITHDRAWN published on 25.11.2002
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GB/T 231.3-2012
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Metallic materials—Brinell hardness test—Part 3:Calibration of reference blocks
WITHDRAWN published on 31.12.2012
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GB/T 2310-1980
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Mechanical properties of interchangeable magnetic eleven-disk pack
WITHDRAWN published on 26.12.1980
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GB 23101.2-2008
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Implants for surgery—Hydroxyapatite—Part 2:Coatings of hydroxyapatite
WITHDRAWN published on 30.12.2008
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GB/T 23101.3-2010
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Implants for surgery—Hydroxyapatite—Part 3:Chemical analysis and characterization of crystallinity and phase purity
WITHDRAWN published on 2.9.2010
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