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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 building sealants—Part 3Determination of extrudability of sealants using standardized apparatus
Standard published on 31.5.2017
Selected format:Test method for building sealants—Part 4Determination of extrudability of one-component sealants
Standard published on 31.5.2017
Selected format:Test method for building sealants Part 5:Determination for tack-free time
Standard published on 17.12.2002
Selected format:Test method for building sealants Part 6:Determination of flow
Standard published on 17.12.2002
Selected format:Test method for building sealants--Part 7:Determination of low-temperature flexibility
Standard published on 17.12.2002
Selected format:Test method for building sealants—Part 8:Determination of tensile properties
Standard published on 31.5.2017
Selected format:Test method for building sealants—Part 9Determination of adhesion/cohesion properties after immersion in water
Standard published on 31.5.2017
Selected format:Spheroidal graphite iron castings
Standard published on 31.12.2019
Selected format:Thermal insulating products for building applicationsDetermination of compression behaviour
Standard published on 27.3.2014
Selected format:The national food safety standards of food additives sorbitan monostearate ester (Span 60)
Standard published on 21.11.2011
Selected format:Latest update: 2026-04-02 (Number of items: 2 270 295)
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