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Standards GB - Chinese national standards - Page 7343
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 8984.3-1997
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Determination of carbon monoxide,carbon dioxide and hydrocarbon in the gases—Part 3:Determination of total hydrocarbon in gases—Flame ionization method
WITHDRAWN published on 13.8.1997
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GB/T 8987-1988
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Micrographics—Test target of optical density measurement for microfilming negative
WITHDRAWN published on 11.4.1988
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GB/T 8988-1988
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Micrographics—Manufacture of test target for inspecting the quality of micrography of technical drawings
WITHDRAWN published on 11.4.1988
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GB/T 8989-1998
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Micrographics—Ouality criteria and control of micrography of technical drawings and documentations
WITHDRAWN published on 27.3.1998
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GB/T 8990-1988
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Micrographics—Reflectance test target used in the test target for inspecting the quality of micrography of technical drawing
WITHDRAWN published on 11.4.1988
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GB/T 8992-1988
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Test procedures for Si(Li) X-ray--Detector systems
WITHDRAWN published on 12.4.1988
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GB/T 8993.1-1988
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Basic environmental testing procedures of nuclear instruments--General program
WITHDRAWN published on 7.3.1988
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GB/T 8994-1988
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Calibration for radiation protection instruments X and exposure rate meters
WITHDRAWN published on 12.4.1988
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GB/T 8995-1988
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In-core instrumentation for neutron fluence rate measurements in nuclear reactors
WITHDRAWN published on 12.4.1988
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GB/T 8996-1988
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Dimensions of sample planchets used in nuclear electronic instruments
WITHDRAWN published on 12.4.1988
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