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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
Ultra-high vacuum flange
Standard published on 29.10.2003
Selected format:Reciprocating internal combustion engines - Performance - Part 1: Declarations of power, fuel and lubricating oil consumptions, and test methods - Additional requirements for engines for general use
Standard published on 3.2.2008
Selected format:Reciprocating internal combustion engines - Performance - Part 3: Test measurements
Standard published on 4.11.2008
Selected format:Reciprocating internal combustion engines - Performance - Part 4: Speed governing
Standard published on 3.9.2012
Selected format:Reciprocating internal combustion engines--Performance--Part 5: Torsional vibrations
Standard published on 19.5.2003
Selected format:Reciprocating internal combustion engines—Performance—Part 6: Overspeed protection
Standard published on 31.10.2025
Selected format:Type LT highly flexible friction clutch
Standard published on 9.8.2010
Selected format:Leaf chains,clevises and sheaves - Dimensions,measuring forces and tensile strengths
Standard published on 25.12.2006
Selected format:
Leaf chains, clevises and sheaves—Dimensions, measuring forces, tensile strengths and dynamic strengths
Execute Date: july 2026
Standard published on 2.12.2025
Selected format:Mechanical vibration - Evaluation of machine vibration by measurements on non-rotating parts - Part 1: General guidelines
Standard published on 5.11.2012
Selected format:Latest update: 2026-06-24 (Number of items: 2 284 377)
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