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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
Standard published on 12.10.2022
Selected format:Reciprocating internal combustion engines—Exhaust emission measurement—Part 7Engine family determination
Standard published on 6.2.2018
Selected format:Reciprocating internal combustion engines—Exhaust emission measurement—Part 8Engine group determination
Standard published on 28.12.2018
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
Standard published on 12.7.2017
Selected format:Safety of machinery—Guards—General requirements for the design and construction of fixed and movable guards
Standard published on 28.12.2018
Selected format:Raised countersunk head screws with cross recess
Standard published on 31.12.2015
Selected format:Bisultap soluble concentrate
Standard published on 31.12.2019
Selected format:Determination of germanium in coal
Standard published on 1.11.2007
Selected format:Determination of gallium in coal
Standard published on 1.11.2007
Selected format:Square set screws with chamfered end
Standard published on 17.9.2018
Selected format:Latest update: 2026-06-12 (Number of items: 2 281 969)
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