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Standards GB - Chinese national standards - Page 5426
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 8444-1998
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Textiles--Testing method for colour fastness to metals in the dye-bath:Iron and copper
Standard published on 20.10.1998
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GB/T 8446.1-2022
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Heat sinks for power semiconductor devices—Part 1: Radiators
Standard published on 9.3.2022
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GB/T 8446.2-2022
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Heat sinks for power semiconductor devices—Part 2: Measurement methods of thermal resistance and inlet-outlet fluid pressure drop
Standard published on 9.3.2022
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GB/T 8446.3-2022
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Heat sinks for power semiconductor devices—Part 3: Insulators and fasteners
Standard published on 9.3.2022
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GB/T 8447-2008
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Industrial linear alkylbenzene sulfonic acid
Standard published on 30.12.2008
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GB/T 845-2017
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Cross-recessed pan head tapping screws
Standard published on 12.7.2017
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GB/T 8452-2025
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Glass bottles—Test method for verticality
Standard published on 31.10.2025
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GB/T 8454-2020
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Reduced ilmenite powder for welding rob—Determination of ferrous iron content—Potassium dichromate titrimetric method
Standard published on 2.6.2020
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GB/T 8456-2025
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Textile machinery—Knitting machines—Nominal diameters of circular machines
Standard published on 30.5.2025
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GB/T 8457-2003
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Textile machinery and accessories--Knitting machines--Number of needles for circular knitting machines of large nominal diameter
Standard published on 10.2.2003
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