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Standards GB - Chinese national standards - Page 4953
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 5274.1-2018
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Gas analysis—Preparation of calibration gas mixtures—Part 1:Gravimetric method for class I mixtures
Standard published on 17.9.2018
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GB/T 5274.2-2026
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Gas analysis—Preparation of calibration gas mixtures—Part 2: Gravimetric method for Class mixtures
Execute Date: december 2026
Standard published on 25.5.2026
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GB/T 5275.1-2024
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Gas analysis—Preparation of calibration gas mixtures using dynamic methods—Part 1:General aspects
Standard published on 15.3.2024
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GB/T 5275.10-2009
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Gas analysis - Preparation of calibration gas mixtures using dynamic volumetric methods - Part 10: Permeation method
Standard published on 2.6.2009
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GB/T 5275.11-2014
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Gas analysisPreparation of calibration gas mixtures using dynamic volumetric methodsPart 11: Electrochemical generation
Standard published on 8.7.2014
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GB/T 5275.2-2022
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Gas analysis—Preparation of calibration gas mixtures using dynamic methods—Part 2: Piston pumps
Standard published on 30.12.2022
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GB/T 5275.4-2014
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Gas analysis—Preparation of calibration gas mixtures using dynamic volumetric methods—Part 4: Continuous syringe injection method
Standard published on 8.7.2014
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GB/T 5275.5-2014
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Gas analysisPreparation of calibration gas mixtures using dynamic volumetric methodsPart 5: Capillary calibration devices
Standard published on 8.7.2014
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GB/T 5275.6-2023
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Gas analysis—Preparation of calibration gas mixtures using dynamic methods—Part 6:Critical flow orifices
Standard published on 17.3.2023
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GB/T 5275.7-2025
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Gas analysis—Preparation of calibration gas mixtures using dynamic methods— Part 7:Thermal mass-flow controllers
Standard published on 5.10.2025
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