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Standards GB - Chinese national standards - Page 8124
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 4046-1983
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A series of diameter for the dial foot of watches
WITHDRAWN published on 1.1.1983
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GB 4047-1983
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Dimensions of round glass for watch cases
WITHDRAWN published on 1.1.1983
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GB/T 4048-1983
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Wristwatch cases--Dimensions of fastening elements for bracelets
WITHDRAWN published on 17.12.1983
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GB 4049-1983
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Wristwatch--Dimensions of spring bars for bracelets
WITHDRAWN published on 1.1.1983
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GB/T 405-1978
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Rules of acceptance for cotton yarn
WITHDRAWN published on 20.6.1978
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GB 4050-1983
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Dimensional series of horological jewel elements
WITHDRAWN published on 1.1.1983
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GB 4051-1983
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WITHDRAWN published on 1.1.1983
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GB/T 4051-1997
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Cal synthetic ruby
WITHDRAWN published on 28.5.1997
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GB 4052-1983
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Full face rock tunnel boring machine--Terminology
WITHDRAWN published on 1.1.1983
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GB 4053.1-1993
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Safety requirements for fixed steel vertical ladders
WITHDRAWN published on 27.12.1993
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