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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
Reciprocating internal combustion engines—Exhaust emission measurement—Part 6:Report of measuring results and test
WITHDRAWN published on 28.12.2006
Selected format:Reciprocating internal combustion engines—Exhaust emission measurement—Part 7:Engine family determination
WITHDRAWN published on 15.4.2003
Selected format:Reciprocating internal combustion engines—Exhaust emission measurement—Part 8:Engine group determination
WITHDRAWN published on 15.4.2003
Selected format:Reciprocating internal combustion engines—Exhaust emission measurement—Part 9:Test cycles and test procedures for test-bed measurement of exhaust gas smoke emissions from compression ignition engines operating under transient conditions
WITHDRAWN published on 10.11.2010
Selected format:Diesel engine emissions--Determination of total hydrocarbons--Hydrogen flame ionization method (HFID)
WITHDRAWN published on 7.9.1987
Selected format:Health protection zone standard for oil refinery
WITHDRAWN published on 24.7.1987
Selected format:Health protection zone for petroleum processing industry
WITHDRAWN published on 30.12.2011
Selected format:Sefety requirement of guard on machinery
WITHDRAWN published on 21.9.1987
Selected format:Safety of machinery—Guards—General requirements for the design and construction of fixed and movable guards
WITHDRAWN published on 13.3.2003
Selected format:Safety requirement of shield
WITHDRAWN published on 21.9.1987
Selected format:Latest update: 2025-07-02 (Number of items: 2 207 218)
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