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Standards GB - Chinese national standards - Page 5148
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 7660.1-2013
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Reflecting prismsPart 1: Geometrical characteritics
Standard published on 17.12.2013
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GB/T 7660.2-2013
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Reflecting prismsPart 2: Characteritics of image rotation
Standard published on 17.12.2013
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GB/T 7660.3-2013
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Reflecting prismsPart 3: Optical parallelism and test method
Standard published on 17.12.2013
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GB/T 7661-2009
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Bubble classes of optical elements
Standard published on 15.11.2009
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GB/T 7665-2005
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General terminology for transducers
Standard published on 29.7.2005
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GB/T 7666-2005
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Nomenclature and code for transducers
Standard published on 29.7.2005
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GB/T 7670-2009
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Electrodynamic vibration generating systems(equipment) - Performance characteristics
Standard published on 24.4.2009
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GB/T 7672.1-2008
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Glass-fiber wound winding wires - Part 1: Glass-fiber wound rectangular copper wire - General requirements
Standard published on 30.6.2008
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GB/T 7672.2-2008
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Glass-fiber wound winding wires - Part 2: Glass-fiber wound resin or varnish impregnated, bare or enamelled rectangular copper wire, temperature index 130
Standard published on 30.6.2008
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GB/T 7672.21-2008
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Glass-fiber wound winding wires - Part 21: Glass-fiber wound round copper wire - General requirements
Standard published on 30.6.2008
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