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Standards GB - Chinese national standards - Page 23
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 10221-2021
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Sensory analysis—Vocabulary
Standard published on 11.10.2021
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GB/T 10224-1988
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Basic rack tooth profile of fine-pitch bevel gears
Standard published on 22.12.1988
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GB/T 10224-2025
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Basic rack tooth profile of fine-pitch bevel gears
Standard published on 29.8.2025
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GB/T 10225-1988
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Accuracy of fine-pitch bevel gears
Standard published on 22.12.1988
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GB/T 10225-2025
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Accuracy of fine-pitch bevel gears
Execute Date: july 2026
Standard published on 2.12.2025
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GB/T 10226-1988
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Basic rack tooth profile of fine-pitch cylindrical worm
Standard published on 22.12.1988
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GB/T 10227-1988
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Accuracy of fine-pitch cylindrical worm and wormwheel
Standard published on 22.12.1988
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GB/T 10227-2025
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Accuracy of fine-pitch cylindrical worm and worm-wheel
Standard published on 29.8.2025
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GB/T 10228-2023
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Technical parameters and requirements for dry-type power transformers
Standard published on 23.5.2023
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GB/T 10230.1-2019
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Tap-changers--Part 1:Performance requirements and test methods
Standard published on 31.12.2019
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