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Standards GB - Chinese national standards - Page 7486
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 2987-1982
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Letter symbols of parameter for electronic tubes
WITHDRAWN published on 1.1.1982
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GB/T 2988-1987
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High-alumina refractory bricks
WITHDRAWN published on 29.3.1982
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GB/T 2988-2004
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High alumina brick
WITHDRAWN published on 19.1.2004
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GB/T 2988-2012
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High alumina bricks
WITHDRAWN published on 5.11.2012
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GB/T 2988-2012E
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High alumina bricks
WITHDRAWN published on 5.11.2012
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GB 2989-1987
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High-alumina refractory bricks for blast furnaces
WITHDRAWN published on 1.1.1987
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GB/T 29893-2013
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Log for lumber in light wood frame construction
WITHDRAWN published on 12.11.2013
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GB/T 29899-2013
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Determination of the emission of volatile organic compounds from wood-based panels and furnishing—Small chamber method
WITHDRAWN published on 12.11.2013
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GB 299-1985
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Rolling bearings--Metric double row tapered roller bearings--Boundary dimensions
WITHDRAWN published on 1.1.1985
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GB/T 299-1995
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Rolling bearings—Metric double row tapered roller bearings—Boundary dimensions
WITHDRAWN published on 14.12.1995
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