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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
Parallel shank twist drills - Part 4: The types and dimensions for extra long parallel shank twist drills
Standard published on 4.11.2008
Selected format:Subland twist drills for holes prior to tapping screw threads
Standard published on 7.9.2023
Selected format:Subland twist drills - Technical specifications
Standard published on 26.7.2007
Selected format:Chemical reagent—General method for the determination of refractive index
Standard published on 20.8.2021
Selected format:Quality grading of legume seeds
Standard published on 9.4.2008
Selected format:
Legume forage seed
Execute Date: january 2027
Standard published on 31.12.2025
Selected format:Quality grading of the grass seeds
Standard published on 27.6.2008
Selected format:
Quality grading of gramineous seed
Execute Date: january 2027
Standard published on 31.12.2025
Selected format:Synthetic cutting fluids
Standard published on 2.9.2010
Selected format:Manganin and constantan alloy wires,sheet and rolled wires for precision electrical resistance
Standard published on 1.12.2010
Selected format:Latest update: 2026-06-22 (Number of items: 2 284 351)
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