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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
Technical regulations for dust control in shaft kiln cement plants
WITHDRAWN published on 7.4.1986
Selected format:Test method for flexivity constant of thermostat metals
WITHDRAWN published on 8.4.1986
Selected format:Test method for specific flexivity constant of ther mostat metals
WITHDRAWN published on 12.9.2003
Selected format:Test method for flexivity of thermostat metals
WITHDRAWN published on 8.4.1986
Selected format:Dense shaped refractory products--Test method of linear changes on reheating
WITHDRAWN published on 8.4.1986
Selected format:Dense shaped refractory products—Determination of permanent changs in dimension on heating
WITHDRAWN published on 9.6.2004
Selected format:Refractory products—Determination of permanent change in dimension on heating
WITHDRAWN published on 11.9.2007
Selected format:-
WITHDRAWN published on 1.1.1986
Selected format:Refractory products—Determination of Refractoriness-under-load—Differential-with rising temperature
WITHDRAWN published on 15.12.1998
Selected format:Refractory products—Determination of refractoriness-under-load—Differential method with rising temperature
WITHDRAWN published on 3.6.2008
Selected format:Latest update: 2026-04-24 (Number of items: 2 274 650)
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