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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
Standard sand for cement strength test
WITHDRAWN published on 19.12.1977
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WITHDRAWN published on 1.1.1982
Selected format:Test tape for broadcast tape recorders
WITHDRAWN published on 17.12.1992
Selected format:Thermal analysis test methods for kinetic constants of combustible materials
WITHDRAWN published on 5.8.1999
Selected format:Designation system for rare earth products
WITHDRAWN published on 9.8.1999
Selected format:Reciprocating internal combustion engines--Graphical symbols
WITHDRAWN published on 10.8.1999
Selected format:Reciprocating internal combustion engines—Graphical symbols
WITHDRAWN published on 25.11.2003
Selected format:Method of reliability test for tower cranes
WITHDRAWN published on 10.8.1999
Selected format:Test method for the tower crane structures
WITHDRAWN published on 10.8.1999
Selected format:Asphalt mixing plant
WITHDRAWN published on 10.8.1999
Selected format:Latest update: 2025-09-02 (Number of items: 2 230 856)
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