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Standards GB - Chinese national standards - Page 8679
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 7582-1987
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Acoustics—Threshold of hearing by air conduction as a function of age and sex for otologically normal persons
WITHDRAWN published on 27.3.1987
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GB/T 7582-2004
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Acoustics--Statistical distribution of hearing thresholds as a function of age
WITHDRAWN published on 13.5.2004
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GB/T 7584-1987
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Acoustics—Measurement of sound attenuation of hearing protectors—Subjective method
WITHDRAWN published on 27.3.1987
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GB/T 7585-1987
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Capacity series and radio-frequency channel arrangement for analog microwave relay systems
WITHDRAWN published on 27.3.1987
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GB 7586-1987
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Testing method of hydraulic excavators
WITHDRAWN published on 1.1.1987
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GB/T 7586-1996
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Testing method of hydraulic excavators
WITHDRAWN published on 5.4.1996
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GB/T 7586-2008
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Hydraulic excavators—Test methods
WITHDRAWN published on 26.8.2008
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GB 7587.1-1987
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Elevating scrapers--Volumetric rating
WITHDRAWN published on 1.1.1987
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GB 7587.2-1987
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Open bowl scrapers--Volumetric rating
WITHDRAWN published on 1.1.1987
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GB 7588-1995
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Safety rules for the construction and installation of electric lifts
WITHDRAWN published on 1.12.1995
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