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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
Testing method for linear density of man-made filament yarns
Standard published on 18.6.2008
Selected format:Man-made fibre—Test method for tensile properties of filament yarns
Standard published on 15.4.2022
Selected format:Testing method for twist of man-made filament
Standard published on 18.6.2008
Selected format:Man-made fiber—Testing method for unevenness of filament yarns—Capacitance method
Standard published on 11.9.2015
Selected format:Open front mechanical power presses - Types and basic parameters
Standard published on 2.4.2009
Selected format:hobs for double-circular-arc gear
Standard published on 26.7.2007
Selected format:Press brake - Testing of the accuracy
Standard published on 16.6.2011
Selected format:Methods for chemical analysis of tungsten ores and molybdenum ores—Part 1:Determination of tungsten content
Standard published on 10.11.2010
Selected format:Methods for chemical analysis of tungsten ores and molybdenum ores - Part 11Determination of bismuth content
Standard published on 10.11.2010
Selected format:Methods for chemical analysis of tungsten ores and molybdenum ores - Part 12Determination of silver content
Standard published on 10.11.2010
Selected format:Latest update: 2026-06-14 (Number of items: 2 282 206)
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