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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
Insulation coordination for equipment within low-voltage systems - Part 5: Comprehensive method for determining clearances and creepage distances equal to or less than 2mm
Standard published on 16.7.2008
Selected format:Insulation coordination for equipment within low-voltage systems—Part 2-2: Interface considerations—Application guide
Standard published on 24.2.2016
Selected format:Earth-moving machinery—Engine test code—Net power
Standard published on 9.10.2015
Selected format:Earth-moving machinery—Operator""s field of view—Test method and performance criteria
Standard published on 21.7.2020
Selected format:Fasteners - General requirements for bolts,screws,studs and nuts
Standard published on 25.8.2008
Selected format:High strength bolts for joints of space grid structures
Standard published on 24.2.2016
Selected format:Rolling bearings - Sleeve type linear ball bearings - Boundary dimensions and tolerances
Standard published on 5.11.2012
Selected format:Electronic gas—Bulk gas
Standard published on 1.8.2025
Selected format:General specification for shortwave single sideband communication equipments
Standard published on 29.12.2017
Selected format:Helical spring fatigue testing standard
Standard published on 16.3.2009
Selected format:Latest update: 2026-08-26 (Number of items: 2 298 418)
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