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Standards GB - Chinese national standards - Page 7789
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 4128-1984
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Standard hydrophone
WITHDRAWN published on 1.1.1984
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GB 4129-1984
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Reference sound source
WITHDRAWN published on 1.1.1984
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GB/T 4129-1995
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Acoustics--Determination of sound power levels of noise sources--Requirements for the performance and calibration of reference sound source
WITHDRAWN published on 3.7.1995
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GB/T 4129-2003
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Acoustics--Requirements for the performance and calibration of reference sound sources used for the determination of sound power levels
WITHDRAWN published on 14.4.2003
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GB/T 413-1978
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Test methods of light fastness for printed and dyed fabrics
WITHDRAWN published on 20.6.1978
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GB/T 4130-2000
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Acoustics—Low frequency calibration methods of hydrophones
WITHDRAWN published on 16.3.2000
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GB/T 4130-2017
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Acoustics—Low frequency calibration methods of hydrophones
WITHDRAWN published on 1.11.2017
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GB 4131-1984
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Cement nomenclature
WITHDRAWN published on 1.1.1984
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GB/T 4131-1997
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Nomenclature, definition and terminology of cement
WITHDRAWN published on 28.7.1997
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GB/T 41317-2022
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Stainless steel corrugated tubes for the connection of gas appliances
WITHDRAWN published on 9.3.2022
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