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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
Charpy V reference test pieces for verification of pendulum-type impact testing machines
WITHDRAWN published on 22.2.2002
Selected format:Measurement of fluid flow in closed conduits—Methods of evaluating the performance of electromagnetic flow-meters for liquids
WITHDRAWN published on 22.2.2002
Selected format:Unified test method for neutral dyestuff
WITHDRAWN published on 18.3.1980
Selected format:Neutral dyes-Determination of dyeing shade and relative strength
WITHDRAWN published on 9.10.2003
Selected format:Measurement of conductive liquid flow in closed conduits—Method using electromagnetic flowmeters
WITHDRAWN published on 22.2.2002
Selected format:Single-end metal-halide lamps(175W1500W Scl3-Nal Series lamps)
WITHDRAWN published on 22.2.2002
Selected format:Metal-halide lamps(ScI3-NaI series)
WITHDRAWN published on 29.4.2008
Selected format:Industrial microwave heating installations—Test methods for the determination of power output
WITHDRAWN published on 28.2.2002
Selected format:Mechanical structures for electronic equipment—Tests for IEC 60917 and IEC 60297—Part 1:Climatic,mechanical tests and safety aspects for cabinets, racks, subracks and chassis
WITHDRAWN published on 28.2.2002
Selected format:Mechanical structures for electronic equipment—Tests for IEC 60917 and IEC 60297—Part 2:Seismic tests for cabinets and racks
WITHDRAWN published on 23.1.2007
Selected format:Latest update: 2025-06-30 (Number of items: 2 206 311)
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