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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
Test methods for thermal stability of silica glass
WITHDRAWN published on 31.3.1989
Selected format:Test method for delamination strength of honeycomb type core
WITHDRAWN published on 1.1.1989
Selected format:Test method accelerated for resistance of glass fiber reinforced plastics to water
WITHDRAWN published on 31.3.1989
Selected format:Chemical reagent--8-Hydroxyquinoline
WITHDRAWN published on 31.3.1989
Selected format:Chemical reagent—5-Sulfosalicylic acid
WITHDRAWN published on 31.3.1989
Selected format:Rubber gate seals
WITHDRAWN published on 1.1.1989
Selected format:Rubber—Determination of flammability by oxygen index
WITHDRAWN published on 31.3.1989
Selected format:Rubber seals-joint rings for water supply pipelines up to 110 Centigrade--Specification for materials
WITHDRAWN published on 1.1.1989
Selected format:Rubber, vulcanized--Performed compression seals for use between concrete motorway paving sections--Specification for material
WITHDRAWN published on 1.1.1989
Selected format:Rubber building gaskets--Materials for preformed solid vulcanized structural gaskets--Specification
WITHDRAWN published on 1.1.1989
Selected format:Latest update: 2026-06-11 (Number of items: 2 281 927)
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