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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
Wrought superalloy—Hot-rolled plates
Standard published on 29.8.2025
Selected format:Wrought superalloy—Cold-rolled sheets and strips
Standard published on 29.8.2025
Selected format:Test method for superalloys—Part 1Macro-structures
Standard published on 29.8.2025
Selected format:Test methods for superalloys—Part 2Microstructure
Standard published on 29.8.2025
Selected format:Test methods for grain sizesprimary dendrite spacing and microshrinkage of superalloy castings
Standard published on 23.12.2010
Selected format:Mushroom head nib bolts
Standard published on 9.6.2013
Selected format:Guide for magnetizing behaviour of permanent magnets
Standard published on 3.12.2025
Selected format:Pressure vessels—Part 1: General requirements
Standard published on 24.7.2024
Selected format:Pressure vessels—Part 2Materials
Standard published on 24.7.2024
Selected format:Latest update: 2026-06-16 (Number of items: 2 283 267)
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