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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
Gypsum plasters--General test conditions
Standard published on 8.2.1999
Selected format:Gypsum plasters--Determination of water of crystallization content
Standard published on 8.2.1999
Selected format:Gypsum plasters--Determination of mechanicalproperties
Standard published on 8.2.1999
Selected format:Gypsum plasters--Determination of physical properties of pure paste
Standard published on 8.2.1999
Selected format:Gypsum plasters--Determination of physical properties of powder
Standard published on 8.2.1999
Selected format:Unified coding for natural stone
Standard published on 25.4.2025
Selected format:Test method of cement mortar strength ( ISO method )
Standard published on 31.12.2021
Selected format:Determinations for isotopes of lead,strontium and neodymium in rock samples
Standard published on 5.10.2025
Selected format:Determination of nitrogen in crude oil—Boat-inlet chemiluminescence
Standard published on 31.12.2021
Selected format:Steering system of motor vehicles—Basic requirements
Standard published on 2.12.2025
Selected format:Latest update: 2026-09-04 (Number of items: 2 300 131)
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