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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
Electromagnetic (eddy-current) examination of copper and copper alloy seamless tube
Standard published on 29.8.2016
Selected format:Permeable sintered metal materials - Determination of bubble test pore size
Standard published on 6.9.2013
Selected format:Permeable sintered metal materialsDetermination of fluid permeability
Standard published on 5.12.2014
Selected format:Test method for dislocation density of monocrystal germanium
Standard published on 2.6.2020
Selected format:Fiber-reinforced plastic composites - Determination of compressive properties in the in-plane direction
Standard published on 30.6.2008
Selected format:Information processing--Control functions for 7-bit and 8-bit coded character sets
Standard published on 7.12.1994
Selected format:Agricultural machinery testing conditions-general rules for measuring methods
Standard published on 3.6.2008
Selected format:Agricultural tractors and machinery - Guards for power take-off drive shafts - Strength and wear tests and acceptance criteria
Standard published on 30.11.2009
Selected format:Plunger of diesel fuel injection pump—Specifications
Standard published on 12.10.2022
Selected format:Acoustics - Measurement of underwater noise
Standard published on 30.9.2009
Selected format:Latest update: 2026-08-14 (Number of items: 2 293 479)
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