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Standards GB - Chinese national standards - Page 4779
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 4728.2-2018
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Graphical symbols for electrical diagrams—Part 2Symbol elements,qualifying symbols and other symbols having general application
Standard published on 13.7.2018
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GB/T 4728.3-2018
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Graphical symbols for electrical diagrams—Part 3Conductors and connecting devices
Standard published on 13.7.2018
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GB/T 4728.4-2018
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Graphical symbols for electrical diagrams—Part 4: Basic passive components
Standard published on 13.7.2018
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GB/T 4728.5-2018
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Graphical symbols for electrical diagrams—Part 5Semiconductors and electron tubes
Standard published on 13.7.2018
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GB/T 4728.6-2022
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Graphical symbols for electrical diagrams—Part 6 Production and conversion of electrical energy
Standard published on 12.10.2022
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GB/T 4728.7-2022
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Graphical symbols for electrical diagrams—Part 7:Switchgear,controlgear and protective devices
Standard published on 12.10.2022
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GB/T 4728.8-2022
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Graphical symbols for electrical diagrams—Part 8:Measuring instruments,lamps and signalling devices
Standard published on 12.10.2022
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GB/T 4728.9-2022
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Graphical symbols for electrical diagrams—Part 9:Telecommunications:Switching and peripheral equipment
Standard published on 12.10.2022
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GB/T 47280-2026
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Nanotechnology—A testing method for the magnetic resonance relaxivity of ferrite nanoparticles
Execute Date: october 2026
Standard published on 31.3.2026
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GB/T 47281-2026
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Nanotechnology—Nano-object chemical composition detection—Graphene plasmon surface-enhanced infrared spectroscopy
Execute Date: october 2026
Standard published on 31.3.2026
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