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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
Metallic and other non-organic coating -- General rules for corrosion tests applicable for storage conditions
Standard published on 12.10.2005
Selected format:Metallic coatings-Measurement of coating thickness-Profilometric method
Standard published on 23.6.2005
Selected format:
Metallic coatings—Measurement of coating thickness—Profilometric method
Execute Date: may 2026
Standard published on 31.10.2025
Selected format:Metallic coatings - Electroplated coatings of chromium for engineering purposes
Standard published on 19.6.2008
Selected format:Information processing--8-Bit code for information interchange--Structure and rules for implementation
Standard published on 12.6.1989
Selected format:Test methods for the properties of piezoelectric ceramics - Test for the static flexural strength
Standard published on 4.8.2008
Selected format:Morse and metric taper reamers
Standard published on 28.2.2017
Selected format:Dibutylphthalate for industrial use
Standard published on 24.8.2006
Selected format:Di-(2-ethylhexyl)phthalate for industrial use
Standard published on 28.8.2001
Selected format:Vulcanizing accelerator 2 - Mercaptobenzothiazole MBT
Standard published on 19.7.2013
Selected format:Latest update: 2026-03-18 (Number of items: 2 266 854)
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