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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
Alloy structural steel plate and strip
Standard published on 6.3.2020
Selected format:
Alloy structural steel plate, sheet and strip
Execute Date: may 2026
Standard published on 31.10.2025
Selected format:Cold-rolled sheet and strip of carbon structural steels
Standard published on 18.10.2019
Selected format:Non-destructive testing—Practice for fabrication and control of steel reference blocks used in ultrasonic testing
Standard published on 9.10.2015
Selected format:Method for eddy current testing of round steel
Standard published on 7.9.2023
Selected format:Steel and iron Determination of oxygen content The pulse heating inert gas fusion-infra-red absorption method
Standard published on 2.3.2006
Selected format:Hot rolled H and cut T section steel
Standard published on 31.5.2017
Selected format:Hot rolled H and cut T section steel
Standard published on 26.10.2024
Selected format:Hot-rolled light rails
Standard published on 5.11.2012
Selected format:Hot-rolled light rails
Standard published on 29.8.2025
Selected format:Latest update: 2026-03-17 (Number of items: 2 266 788)
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