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Standards GB - Chinese national standards - Page 7224
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/Z 24839-2009
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Technical specification of post insulators for 1 000 kV AC system
WITHDRAWN published on 30.11.2009
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GB 2484-1984
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Symbols for bonded abrasives
WITHDRAWN published on 1.1.1984
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GB/T 2484-1994
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Symbols and designation for bonded abrasive products
WITHDRAWN published on 20.12.1994
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GB/T 2484-2006
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Bonded abrasive products—General requirements
WITHDRAWN published on 20.7.2006
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GB/T 2484-2018
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Bonded abrasive products—General requirements
WITHDRAWN published on 17.9.2018
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GB/Z 24840-2009
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Technical specification for bushing of 1000 kV AC system
WITHDRAWN published on 30.11.2009
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GB/Z 24841-2009
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Technical specification for capacitor voltage transformers of 1 000 kV AC system
WITHDRAWN published on 30.11.2009
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GB/Z 24842-2009
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Overvoltage and insulation coordination of 1000 kV UHV AC transmission project
WITHDRAWN published on 30.11.2009
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GB/Z 24843-2009
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Technical specification of 1 000 kV single phase oil-immersed auto-transformer
WITHDRAWN published on 30.11.2009
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GB/Z 24844-2009
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Technical specicaltion for oil-immersed shunt reactor of 1000 kV AC system
WITHDRAWN published on 30.11.2009
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