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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
Classification of degrees of protection provided by enclosures of rotating electrical machines (IP code)
WITHDRAWN published on 12.7.2001
Selected format:Degrees of protection provided by the integral design of rotating electrical machined(IP code)—Classification
WITHDRAWN published on 6.3.2006
Selected format:-
WITHDRAWN published on 1.1.1985
Selected format:Degrees of protection provided by enclosures for low-voltage apparatus
WITHDRAWN published on 20.4.1993
Selected format:Safety of information technology equipment including electrical business equipment
WITHDRAWN published on 1.1.1995
Selected format:Safety of information technology equipment
WITHDRAWN published on 12.11.2001
Selected format:Information technology equipment—Safety—Part 1:General requirements
WITHDRAWN published on 30.12.2011
Selected format:Information technology equipment - Safety - Part 23: Large data storage equipment
WITHDRAWN published on 31.12.2012
Selected format:-
WITHDRAWN published on 1.1.1985
Selected format:Test method for interlaminar tensile strength of glass fiber reinforced plastic laminates
WITHDRAWN published on 28.3.1996
Selected format:Latest update: 2026-02-06 (Number of items: 2 260 317)
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