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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
General test methods of power supply equipments for telecommunications
Standard published on 7.3.2007
Selected format:Test method for dielectric properties of dielectric crystal
Standard published on 28.5.1997
Selected format:Stress area and bearing area for threaded fasteners
Standard published on 29.5.1997
Selected format:General rules of tightening for threaded fasteners
Standard published on 29.5.1997
Selected format:Fasteners - Torque/clamp force testing
Standard published on 10.1.2011
Selected format:Hexagon washer head tapping screws
Standard published on 23.5.2023
Selected format:Hexagon flange head tapping screws
Standard published on 24.2.2016
Selected format:Metallic materials—Calibration and verification of static uniaxial testing machines—Part1:Tension/compression testing machines—Calibration and verification of the force-measuring system
Standard published on 12.10.2022
Selected format:Verification of static uniaxial testing machines—Part 2: Tension creep testing machines—Verification of the applied force
Standard published on 7.6.2018
Selected format:Electro-hydraulic servo universal testing machines
Standard published on 27.11.2023
Selected format:Latest update: 2026-06-20 (Number of items: 2 283 412)
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