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Standards GB - Chinese national standards - Page 7537
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 3987-1983
WITHDRAWN
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Test method for ageing ratio of asbestos--Rubber sheets
WITHDRAWN published on 1.1.1983
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GB 3988-1983
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Test method for compressibility and rebound index of asbestos--Rubber sheets
WITHDRAWN published on 1.1.1983
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GB/T 3990-1983
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Nickel-coated alumina composite powders
WITHDRAWN published on 12.12.1983
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GB/T 3991-1983
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Cobalt-coated tungsten carbide composite powders
WITHDRAWN published on 12.12.1983
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GB/T 3992-1983
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Nickel-coated chromium composite powders
WITHDRAWN published on 12.12.1983
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GB/T 3993-1983
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Nickel-coated copper composite powders
WITHDRAWN published on 12.12.1983
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GB/T 3994-1983
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Shaped insulating refractory products—Fireclay bricks
WITHDRAWN published on 12.12.1983
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GB/T 3994-2005
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Shaped insulating refractory products—Fireclay bricks
WITHDRAWN published on 21.7.2005
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GB/T 3995-1983
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Shaped insulating refractory products—High alumina bricks
WITHDRAWN published on 12.12.1983
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GB/T 3995-2006
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Shaped insulating refractory products—High alumina bricks
WITHDRAWN published on 30.9.2006
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