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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
Rubber- or plastics-coated fabrics—Ventilation ducting
Standard published on 29.8.2025
Selected format:Shipbuilding - Clear openings through frames for external single - Leaf doors
Standard published on 30.7.2008
Selected format:Measurement of airborne noise emitted by marine diesel engine
Standard published on 6.2.2018
Selected format:Shale gas—Environmental protection—Part 2Recommended practice for environmental protection of production operations
Standard published on 23.5.2023
Selected format:Test method for reinforcement products - Part 1: Determination of moisture content
Standard published on 27.11.2013
Selected format:Test method for reinforcement products - Part 2: Determination of combustible-matter content for glass fibre
Standard published on 27.11.2013
Selected format:The method for reinforcement products - Part 3: Determination of mass per unit area
Standard published on 27.11.2013
Selected format:Camera lens—Part 1Zoom lens
Standard published on 5.10.2025
Selected format:Camera iens - Part 2: Fixed focus iens
Standard published on 7.10.2008
Selected format:The test method for evaluating the performance of internal combustion engine oil (Caterpillar 1H2 method)
Standard published on 20.9.1988
Selected format:Latest update: 2026-06-14 (Number of items: 2 282 206)
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