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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
Technical requirements and test methods of insulation resistance and insulating strength for use in industrial process measurement and control instruments
Standard published on 27.1.1995
Selected format:Pulps—Determination of limiting viscosity number in cupri-ethylenediamine (CED) solution
Standard published on 13.12.2016
Selected format:Acoustics--Description and measurement of physical properties of sonic booms
Standard published on 3.7.1995
Selected format:Methods of flow measurement for displacement compressor
Standard published on 9.10.2015
Selected format:Colour filter glass
Standard published on 14.1.2011
Selected format:Colour filter glass test methods--Spectral character-istic
Standard published on 29.1.1995
Selected format:Colour filter glass test methods--Extent of bubble
Standard published on 29.1.1995
Selected format:Colour filter glass test methods--Temperatrue coefficient of sharp cut wavelength
Standard published on 29.1.1995
Selected format:Colour filter glass test methods--Colour temperature conversion ability
Standard published on 29.1.1995
Selected format:Colour filter glass test methods--Chromaticity
Standard published on 29.1.1995
Selected format:Latest update: 2026-04-28 (Number of items: 2 274 955)
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