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Standards GB - Chinese national standards - Page 8750
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 997-1981
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Symbols for types of construction and mounting arrangements of rotating electrical machinery
WITHDRAWN published on 1.1.1981
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GB/T 997-2003
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Classification of types of construction and mounting arrangements for rotating electrical machines(IM code)
WITHDRAWN published on 9.10.2003
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GB/T 997-2008
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Rotating electrical machines—Classification of types of construction,mounting arrangements and terminal box position for(IM Code)
WITHDRAWN published on 24.4.2008
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GB 9970-1988
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Steel wires for link chains of chain hoists
WITHDRAWN published on 1.1.1988
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GB/T 9971-1988
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Pure iron for raw material
WITHDRAWN published on 26.10.1988
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GB/T 9971-2004
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Pure iron for raw material
WITHDRAWN published on 24.3.2004
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GB 9972-1988
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Galvanized low carbon steel wires for general uses
WITHDRAWN published on 1.1.1988
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GB/T 9973-1988
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Test method for the permeability of carbon materials
WITHDRAWN published on 26.10.1988
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GB 9974-1988
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Test method for the elastic modulus of whole graphite electrodes--Velocity of sound
WITHDRAWN published on 1.1.1988
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GB 9975-1988
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Test method for the alkali resistant of carbon bricks
WITHDRAWN published on 1.1.1988
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