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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
Injector nozzle for diesel - Specifications
Standard published on 10.11.2010
Selected format:The method of performance test for positive displacement refrigerant compressors
Standard published on 13.12.2016
Selected format:Corrosion of metals and alloys—Guidelines for exposing and evaluating metals and alloys in surface sea water
Standard published on 6.8.2023
Selected format:Automated full peripheral ultrasonic testing of seamless and welded (except submerged arc-welded) steel tubes for the detection of longitudinal and/or transverse imperfections
Standard published on 4.6.2019
Selected format:Fasteners--Surface discontinuities--Boltsscrews and studs for general requirements
Standard published on 26.9.2000
Selected format:Fasteners--Surface discontinuities--Nuts
Standard published on 26.9.2000
Selected format:Fasteners--Surface discontinuities--Boltsscrews and studs for special requirements
Standard published on 26.9.2000
Selected format:Fasteners—Hexagon head bolts—Product grade C
Standard published on 31.10.2025
Selected format:Fasteners—Hexagon head bolts—Full thread—Product grade C
Standard published on 31.10.2025
Selected format:Fasteners—Hexagon head bolts
Standard published on 31.10.2025
Selected format:Latest update: 2026-06-25 (Number of items: 2 284 379)
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