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Standards GB - Chinese national standards - Page 178
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 12246-2025
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Pilot operated pressure reducing valves
Execute Date: may 2026
Standard published on 31.10.2025
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GB/T 12247-2015
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Automatic steam traps—Classification
Standard published on 10.12.2015
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GB/T 12250-2005
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Automatic steam traps-TermMarkingFace-to-face dimensions
Standard published on 11.7.2005
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GB/T 12250-2023
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Automatic steam traps—Marking
Standard published on 28.12.2023
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GB/T 12251-2005
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Automatic steam traps-Test methods
Standard published on 11.7.2005
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GB/T 12257-2023
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Laser therapeutic equipment—He-Ne laser equipment
Standard published on 23.5.2023
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GB/T 1226-2017
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General pressure gauge
Standard published on 29.12.2017
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GB 12260-2017
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Artificial heart-lung machine--Roller blood pump
Standard published on 29.12.2017
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GB 12263-2017
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Artificial heart-lung machine--Water heating/cooling system
Standard published on 29.12.2017
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GB/T 12265-2021
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Safety of machinery—Minimum gaps to avoid crushing of parts of the human body
Standard published on 21.5.2021
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