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Standards GB - Chinese national standards - Page 5305
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 9225-2022
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Application guidelines of reliability analysis in nuclear power generating station systems and other nuclear facilities
Standard published on 30.12.2022
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GB/T 9226-1988
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Certification of standardized radioactive sources
Standard published on 6.6.1988
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GB/T 9229-1988
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Radioactive materials--Packagings--Tests for contents leakage and radiation leakage
Standard published on 6.6.1988
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GB/T 923-2009
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Acorn hexagon nuts
Standard published on 15.10.2009
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GB/T 9234-2018
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Power reciprocating pump
Standard published on 17.9.2018
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GB/T 9237-2017
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Refrigerating systems and heat pumps—Safety and environmental requirements
Standard published on 29.12.2017
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GB/T 9237-2017/XG2-2020
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Standard published on 1.1.2020
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GB/T 9238-2010
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Symbols for balancing machines and associated instrumentation
Standard published on 14.1.2011
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GB/T 9239.11-2025
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Mechanical vibration—Rotor balancing—Part 11: Procedures and tolerances for rotors with rigid behaviour
Standard published on 1.8.2025
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GB/T 9239.12-2021
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Mechanical vibration—Rotor balancing—Part 12: Procedures and tolerances for rotors with flexible behaviour
Standard published on 20.8.2021
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