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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
Cross-recessed countersunk (flat) head tapping screws
Standard published on 12.7.2017
Selected format:Textile machineryand accessories--Cone sectional warping machines--Maximum usable width
Standard published on 10.2.2003
Selected format:Cast iron,copper and stainless steel valves with screwed connections
Standard published on 17.3.2023
Selected format:Cross-recessed raised countersunk (oval) head tapping screws
Standard published on 12.7.2017
Selected format:Beijing black pig
Standard published on 31.12.2021
Selected format:Shanghai white pig
Standard published on 31.12.2008
Selected format:Sanjiang white pig
Standard published on 26.12.1987
Selected format:Hubei white pig
Standard published on 31.12.2008
Selected format:Zhejiang middle white pig
Standard published on 31.12.2008
Selected format:Aluminium windows and doors
Standard published on 31.3.2020
Selected format:Latest update: 2026-04-26 (Number of items: 2 274 794)
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