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Standards GB - Chinese national standards - Page 5585
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 12175-1990
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Test methods for the measurement of the operational characteristics of brushes for electrical machines
WITHDRAWN published on 1.1.1990
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GB 12176-1990
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Sodium hypochlorite generator
WITHDRAWN published on 12.1.1990
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GB/T 12177-1990
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Numerical control of machines—NC processor output— Logical structure
WITHDRAWN published on 4.1.1990
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GB 12178-1990
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Urban trolleybus and tramway--Pole for power supply network
WITHDRAWN published on 1.1.1990
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GB/T 12179-1990
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General specifications of noise generators
WITHDRAWN published on 1.2.1990
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GB/T 1218-1987
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Depth micrometers
WITHDRAWN published on 30.9.1975
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GB/T 1218-2004
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Depth micrometer
WITHDRAWN published on 10.2.2004
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GB/T 12180-1990
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Test methods for general purpose low frequency signal generators
WITHDRAWN published on 1.2.1990
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GB/T 12181-1990
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General purpose specification of low frequency signal generators
WITHDRAWN published on 1.2.1990
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GB/T 12182-1990
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General specification of secondary surveillance radar for air traffic control
WITHDRAWN published on 1.2.1990
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