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Standards GB - Chinese national standards - Page 129
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 11684-2003
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Electromagnetic environment conditions and testing procedures for nuclear instrumentation
Standard published on 14.4.2003
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GB/T 11685-2003
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Measurement procedures for semiconductor X-ray detector system and semiconductor X-ray energyspectrometers
Standard published on 7.7.2003
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GB/T 11686-2002
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Small craft--Toilet waste retention systems
Standard published on 28.8.2002
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GB/T 11686.1-2025
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Small craft—Waste systems—Part 1: Waste water retention systems
Execute Date: may 2026
Standard published on 5.10.2025
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GB/T 11693-2008
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Welded bed plate for flanges of ship pipe
Standard published on 20.10.2008
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GB/T 11693-2022
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Welded bed plate for flanges of ship pipe
Standard published on 12.10.2022
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GB/T 11698-2008
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Metal valves for use in marine flanged pipe systems - Face-to-face and center-to-face dimensions
Standard published on 30.7.2008
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GB/T 11699-2008
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Small craft with inboard engine - Propeller shaft ends and bosses
Standard published on 5.3.2008
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GB/T 117-2000
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Taper pins
Standard published on 26.9.2000
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GB/Z 117.101-2025
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Photovoltaic modules—Test methods for the detection of potential-induced degradation—Part 1-1: Crystalline silicon—Delamination
Standard published on 4.1.2026
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