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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
Earth-moving machineryHydraulic excavatorsTerminology and commercial specifications
Standard published on 24.7.2014
Selected format:Cooling water radiator for tractor diesel engines - Method of indentifcation symbols
Standard published on 3.2.2008
Selected format:Machine tools--Lubrication systems
Standard published on 9.1.2002
Selected format:Types, dimensions and tolerances of groove for seals with bearing rings for hydraulic cylinders piston
Standard published on 21.5.2021
Selected format:Hydraulic fluid power—Cylinders—Dimensions and tolerances of housings for rod wiper-rings in reciprocating applications
Standard published on 15.3.2024
Selected format:Laborator glassware - Thermal shock and thermal shock endurance - Test methods
Standard published on 5.12.2007
Selected format:Chemical reagent - Ammonium chloride
Standard published on 3.11.2006
Selected format:Glass—Resistance to attack by a boiling aqueous solution of mixed alkali—Method of test and classification
Standard published on 20.8.2021
Selected format:Glass-Resistance to attack by hydrochloric acid at 100 - Flame emission or flame atomic absorption spectrometric method
Standard published on 5.12.2007
Selected format:Glass—Resistance to attack by hydrochloric acid at 100—Flame emission or flame atomic absorption spectrometric method
Standard published on 28.1.2026
Selected format:Latest update: 2026-08-07 (Number of items: 2 292 304)
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