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Standards GB - Chinese national standards - Page 8559
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 7273.6-1987
WITHDRAWN
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Measurements of the electrical properties of disk-seal tubes--Measuring methods of the power gain
WITHDRAWN published on 1.1.1987
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GB 7273.7-1987
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Measurements of the electrical properties of disk-seal tubes--Measuring methods of AM-PM conversion coefficient
WITHDRAWN published on 1.1.1987
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GB 7273.8-1987
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Measurements of the electrical properties of disk-seal tubes--Measuring methods of three tone inter-modulation distortion
WITHDRAWN published on 1.1.1987
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GB/T 7274-1987
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Methods for the measurement of direct interelectrode capacitances of electronic tubes and valves
WITHDRAWN published on 19.2.1987
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GB 7275-1987
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Detail specification for electronic components--Fixed low-power non-wire-wound resistors--Type RJ15 metal film fixed resistors--Assessment level E
WITHDRAWN published on 1.1.1987
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GB 7277-1987
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General hinges
WITHDRAWN published on 1.1.1987
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GB/T 7277-1987
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General hinges
WITHDRAWN published on 19.2.1987
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GB 7278-1987
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Light hinges
WITHDRAWN published on 1.1.1987
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GB/T 7278-1987
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Light hinges
WITHDRAWN published on 19.2.1987
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GB 7279-1987
WITHDRAWN
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Butt hinges with loose
WITHDRAWN published on 1.1.1987
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