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Standards GB - Chinese national standards - Page 782
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 17607-1998
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Chinese classification of seam coals
Standard published on 8.12.1998
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GB/T 17608-2022
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Division of variety and grading for coal products
Standard published on 12.10.2022
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GB/T 17611-1998
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Measurement of fluid flow in closed conduits--Vocabulary and symbols
Standard published on 11.12.1998
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GB/T 17612-1998
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Measurement of liquid flow in closed conduits--Weighing method
Standard published on 11.12.1998
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GB/T 17613.1-1998
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Measurement of liquid flow in closed conduits by weighing method--Procedures for checking installations--Part 1:Static weighing systems
Standard published on 11.12.1998
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GB/T 17614.1-2015
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Transmitters for use in industrial-process control systems—Part 1: Methods for performance evaluation
Standard published on 4.2.2015
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GB/T 17614.2-2015
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Transmitters for use in industrial-process control systems—Part 2: Methods for inspection and roution testing
Standard published on 4.2.2015
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GB/T 17614.3-2018
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Transmitters for use in industrial-process control systems—Part 3: Methods for performance evaluation of intelligent transmitters
Standard published on 13.7.2018
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GB/T 17615-2015
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Nickel-Chromium-Silicon/Nickel-Silicon-Magnesium thermocouple wires
Standard published on 15.5.2015
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GB/T 17616-2025
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Iron and steel coding system for irons, steels and alloys
Standard published on 29.8.2025
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