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Standards GB - Chinese national standards - Page 9056
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 9806-1988
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Specification for sampling drills
WITHDRAWN published on 1.1.1988
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GB 9807-1988
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Tool series for sampling drills
WITHDRAWN published on 1.1.1988
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GB/T 9808-1988
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Series of hydrogeologic and water well drilling tubings
WITHDRAWN published on 5.9.1988
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GB/T 9808-2008
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Seamless steel tubes for drilling
WITHDRAWN published on 10.10.2008
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GB 9809-1988
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Casing, core barrel and sediment tube threads for hydrogeologic and water well drilling
WITHDRAWN published on 1.1.1988
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GB 9810-1988
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Drill pipes for hydrogeologic and water well drilling
WITHDRAWN published on 1.1.1988
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GB 9811-1988
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Drill pipe tool joints for hydrogeologic and water well drilling
WITHDRAWN published on 1.1.1988
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GB 9812-1988
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Drill collars for hydrogeologic and water well drilling
WITHDRAWN published on 1.1.1988
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GB/T 9813-2000
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Generic specification for microcomputers
WITHDRAWN published on 17.10.2000
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GB/T 9814-1988
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Generic specification for vector plotters
WITHDRAWN published on 20.9.1988
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