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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
Basic chemical reagents(volumetry)--Anhydrous paramino-phenyl-sulfonic acid
WITHDRAWN published on 4.2.1977
Selected format:Electroplated coatings on plastics materials—Thermal cycling test
WITHDRAWN published on 18.12.1990
Selected format:Technical requirements of quality control for metal parts to be coated
WITHDRAWN published on 18.12.1990
Selected format:General specification for multifunctional solution of steel and iron surface treatment
WITHDRAWN published on 18.12.1990
Selected format:Plain bearings--Wrapped bushes
WITHDRAWN published on 1.1.1990
Selected format:Plain bearings—Wrapped bushes—Part 1:Dimensions
WITHDRAWN published on 13.9.2002
Selected format:Plain bearings—Wrapped bushes—Part 2:Test data for outside and inside diameter
WITHDRAWN published on 13.9.2002
Selected format:Plain bearings—Wrapped bushes—Part 3:Lubrication holes,lubrication grooves and lubrication indentations
WITHDRAWN published on 13.9.2002
Selected format:Plain bearings—Wrapped bushes—Part 4:Materials
WITHDRAWN published on 13.9.2002
Selected format:Pulleys of wide V-belt for industrial
WITHDRAWN published on 1.1.1990
Selected format:Latest update: 2026-01-11 (Number of items: 2 254 176)
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