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Standards GB - Chinese national standards - Page 5861
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 1322-1988
WITHDRAWN
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Coating for optical element--Rear surface mirror coating
WITHDRAWN published on 1.1.1988
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GB/T 13221-1991
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Ultrafine powder—Determination of particle size distribution—Small-angle X-ray scattering method
WITHDRAWN published on 5.10.1991
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GB/T 13222-1991
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Thermal sprayed metallic coatings—Determination of shear strength
WITHDRAWN published on 5.10.1991
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GB 13223-1996
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Emission standard of air pollutants for thermal power plants
WITHDRAWN published on 7.3.1996
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GB 13223-2003
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Emission standard of air pollutants for thermal power plants
WITHDRAWN published on 30.12.2003
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GB/T 13228-1991
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Industrical explosive—Determination of detonation velocity
WITHDRAWN published on 30.10.1991
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GB/T 13229-1991
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Gelatinous nitroglycerine explosive
WITHDRAWN published on 30.10.1991
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GB/T 13230-1991
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Plain detonators
WITHDRAWN published on 30.10.1991
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GB 13232-1991
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Built-in thermal protection for rotating electrical machines General rules for thermal protectors
WITHDRAWN published on 12.10.1991
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GB/T 13233-1991
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General purpose specification of high—Precise quartz spring gravimeter
WITHDRAWN published on 29.10.1991
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