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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
Test method for mechanical properties of thin-walled tube of carbon fiber reinforced composite—Part 1Tensile testing
Standard published on 25.4.2024
Selected format:Test method for mechanical properties of thin-walled tube of carbon fiber reinforced composite—Part 2Compressive testing
Standard published on 25.4.2024
Selected format:Test method for mechanical properties of thin-walled tube of carbon fiber reinforced composite—Part 3Bending testing of cantilever beam
Standard published on 28.1.2026
Selected format:General test methods for servo circuits of quartz flexible accelerometers for space applications
Standard published on 25.4.2024
Selected format:4 Mb/s digital time division command/response multiplex data bus test plan
Standard published on 25.4.2024
Selected format:Technical requirements and test methods for intermediate/high-speed modulator/demodulator in satellite-to-earth data transmission—Part 1:Modulator
Standard published on 25.4.2024
Selected format:Technical requirements and test methods for intermediate/high-speed modulator/demodulator in satellite-to-earth data transmission—Part 2:Demodulator
Standard published on 28.5.2024
Selected format:Method of risk assessment for intelligent ship
Standard published on 25.4.2024
Selected format:Environmental noise emitted by vessels
Standard published on 25.4.2024
Selected format:Measure method of weighted sound insulation index of ship internal material
Standard published on 25.4.2024
Selected format:Latest update: 2026-09-10 (Number of items: 2 300 145)
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