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Standards GB - Chinese national standards - Page 6894
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 21211-2007
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Equivalent loading and super-position techniques—Indirect testing to determine temperature rise of roating electrical machines
WITHDRAWN published on 3.12.2007
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GB/T 21218-2007
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Specifications for unused silicone insulating liquids for electrotechnical purposes
WITHDRAWN published on 3.12.2007
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GB/T 21219-2007
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Magnetic materials—Classification
WITHDRAWN published on 3.12.2007
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GB 2122-1980
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Determination of tellurium content in selenium--Oscillopolarographic method
WITHDRAWN published on 1.1.1980
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GB/T 21220-2007
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Soft magnetic metallic materials
WITHDRAWN published on 3.12.2007
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GB/T 21221-2007
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Insulating liquids—Specifications for unused insulating liquids based on synthetic aromatic hydrocarbons
WITHDRAWN published on 3.12.2007
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GB/T 21223-2007
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Guide for the statistical analysis of ageing test data—Methods based on mean values of normalement distributed test results
WITHDRAWN published on 3.12.2007
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GB/T 21227-2007
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AC loss measurements—Magnetometer methods for hysteresis loss in Cu/Nb-Ti multifilamentary composites
WITHDRAWN published on 14.11.2007
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GB 2123-1980
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Determination of carbon content in selenium--Combustion conductometric titration method
WITHDRAWN published on 1.1.1980
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GB/T 21230-2007
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Acoustics—Guidelines for the measurement and assessment of exposure to noise in a working environment
WITHDRAWN published on 14.11.2007
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