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Standards GB - Chinese national standards - Page 4984
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 5588-2017
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Technical specification for silver-nickel,silver-iron electrical contacts
Standard published on 1.11.2017
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GB/T 5590-2024
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Low voltage explosion protection electromagnetic starter for mining
Standard published on 23.8.2024
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GB/T 5591.1-2017
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Combined flexible materials for electrical insulation—Part 1: Definitions and general requirements
Standard published on 14.10.2017
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GB/T 5591.2-2017
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Combined flexible materials for electrical insulation—Part 2: Methods of test
Standard published on 14.10.2017
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GB/T 5591.3-2018
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Combined flexible materials for electrical insulation—Part 3Specifications for individual materials
Standard published on 7.6.2018
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GB/T 5593-2015
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Structure ceramic materials used in electronic component and device
Standard published on 15.5.2015
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GB/T 5594.1-1985
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Test methods for properties of structure ceramic used in electronic components--Test method for gas-tightness
Standard published on 27.11.1985
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GB/T 5594.2-1985
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Test methods for properties of structure ceramic used in electronic components--Test method for Youngs elastic modulus and Poisson ratio
Standard published on 27.11.1985
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GB/T 5594.3-2015
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Test methods for properties of structure ceramic used in electronic components and device—Part 3: Test method for mean coefficient of linear expansion
Standard published on 15.5.2015
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GB/T 5594.4-2015
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Test methods for properties of structure ceramic used in electronic components and device—Part 4: Test method for permittivity and dielectric loss angle tangent value
Standard published on 15.5.2015
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