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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 14:Determination of resistance to prolonged exposure to water
WITHDRAWN published on 17.12.2002
Selected format:Test method for building sealants Part 15:Determination of adhesion/cohesion properties after exposure to heat and artificial light through glass and to water
WITHDRAWN published on 17.12.2002
Selected format:Test method for building sealants Part 17:Determination of elastic recovery
WITHDRAWN published on 17.12.2002
Selected format:Test method for building sealants Part 19:Determination of change in mass and volume
WITHDRAWN published on 17.12.2002
Selected format:Test method for building sealants Part 2:Determination of density
WITHDRAWN published on 17.12.2002
Selected format:Test method for building sealants Part 20:Determination of staining
WITHDRAWN published on 17.12.2002
Selected format:Test method for building sealants Part 3:Determination of extrudability of sealants using standardized apparatus
WITHDRAWN published on 17.12.2002
Selected format:Test method for building sealants Part 4:Determination of extrudability of one-component sealants
WITHDRAWN published on 17.12.2002
Selected format:Test method for building sealants Part 8:Determination of tensile properties
WITHDRAWN published on 17.12.2002
Selected format:Test method for building sealants Part 9:Determination of adhesion/cohesion properties after immersion in water
WITHDRAWN published on 17.12.2002
Selected format:Latest update: 2026-01-23 (Number of items: 2 257 393)
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