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Standards GB - Chinese national standards - Page 8772
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 912-1989
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Hot-rolled plain carbon and low alloy structural steel sheets and strips
WITHDRAWN published on 31.3.1989
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GB/T 912-2008
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Hot-rolled sheets and strips of carbon structural steels and high strength low alloy structural steels
WITHDRAWN published on 24.10.2008
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GB/T 9120-2010
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Loose plate steel pipe flanges with weld-neck collar and with weld ring neck
WITHDRAWN published on 14.1.2011
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GB/T 9120.1-2000
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Loose plate steel pipe flanges with welding neck collar with raised face
WITHDRAWN published on 28.9.2000
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GB/T 9120.2-2000
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Loose plate steel pipe flanges with welding neck collar with male and female face
WITHDRAWN published on 28.9.2000
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GB/T 9120.3-2000
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Loose plate steel pipe flanges with welding neck collar with tongue and groove face
WITHDRAWN published on 28.9.2000
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GB 9120.4-1988
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WITHDRAWN published on 1.1.1988
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GB 9120.5-1988
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WITHDRAWN published on 1.1.1988
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GB 9120.6-1988
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WITHDRAWN published on 1.1.1988
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GB/T 9121-2010
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Loose plate steel pipe flanges with weld-on collar
WITHDRAWN published on 14.1.2011
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