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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
Calcium silicate thermal insulation
Standard published on 11.9.2015
Selected format:Semiconductor devices—Scan based ageing level estimation for semiconductor devices
Standard published on 3.12.2025
Selected format:Test methods for elastic moduli of fine ceramics (advanced ceramics, advanced technical ceramics) - Bending method
Standard published on 22.2.2006
Selected format:Test methods for thermal stability of silica glass
Standard published on 30.6.2008
Selected format:Chemical reagent - 5-Sulfosalicylic acid dihydrate
Standard published on 15.5.2008
Selected format:Rubber - Determination of the burning
Standard published on 4.6.2008
Selected format:Reciprocating rubber seals--Typesdimensions and tolerances--Part 1:Rubber seals on one-way
Standard published on 28.8.2000
Selected format:Reciprocating rubber seals--Typesdimensions and tolerances--Part 2:Rubber seals on two-way
Standard published on 28.8.2000
Selected format:Reciprocating rubber seals--Typesdimensions and tolerances--Part 3:Rubber dust seals
Standard published on 28.8.2000
Selected format:Belt drives—V-ribbed belts, joined V-belts and V-belts including wide section belts and hexagonal belts—Electrical conductivity of antistatic belts: Characteristics and methods of test
Standard published on 20.8.2021
Selected format:Latest update: 2026-07-24 (Number of items: 2 290 214)
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