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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
Metallographic test method for spheroidal graphite cast iron
Standard published on 31.12.2021
Selected format:Silica sand for foundry
Standard published on 25.4.2024
Selected format:Steel and iron castings—Liquid penetrant inspection
Standard published on 30.8.2019
Selected format:Steel and iron castings—Magnetic particle inspection
Standard published on 30.8.2019
Selected format:Non-destructive testing—Qualification and certification of personnels
Standard published on 29.9.2024
Selected format:Safety in welding and cutting
Standard published on 3.9.1999
Selected format:
Safety in welding and cutting
Execute Date: august 2026
Standard published on 1.8.2025
Selected format:Determination of the case hardening depth for steel
Standard published on 29.8.2025
Selected format:Determination of total or effective thickness of thin surface hardened layers of steel parts
Standard published on 21.7.2005
Selected format:Test method for qualified work zone of heat treatment furnace
Standard published on 23.5.2023
Selected format:Latest update: 2026-07-26 (Number of items: 2 290 396)
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