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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
Fire nozzles
Standard published on 1.8.2025
Selected format:Tantalum and tantalum alloy seamless tubes
Standard published on 31.3.2008
Selected format:Niobium and niobium alloy seamless tubes
Standard published on 23.11.2007
Selected format:Rhodium sulfate
Standard published on 19.11.2020
Selected format:Palladium() chloride
Standard published on 19.11.2020
Selected format:Palladium () chloride
Standard published on 19.11.2020
Selected format:Milking machine installations - Construction and performance
Standard published on 14.9.2011
Selected format:Milking machine installations - Mechanical tests
Standard published on 14.9.2011
Selected format:Reciprocating internal combustion engines—Emissions terminology and nomenclature
Standard published on 12.7.2017
Selected format:Countersunk flat head screws with cross recess—Part 1: Property class 4.8
Standard published on 24.2.2016
Selected format:Latest update: 2026-10-09 (Number of items: 2 304 581)
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