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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
Aluminium and aluminium alloy extruded tubes—Part 2Seam tubes
Standard published on 29.9.2017
Selected format:Systems and software engineering—Software product Quality Requirements and Evaluation (SQuaRE)—Common Industry Format (CIF) for Usability—User requirements specification
Standard published on 23.8.2024
Selected format:Critical bending diameter measurement—Critical bending diameter measurement of Bi-2223 superconducting wires in liquid nitrogen temperature
Standard published on 23.8.2024
Selected format:Codes for China and world main railway ports and other locations
Standard published on 23.8.2024
Selected format:Intelligent and connected vehicle—Terms and definitions
Standard published on 23.8.2024
Selected format:Determination of performance of pressurized fluid extractor
Standard published on 23.8.2024
Selected format:Requirements for load ports of 300mm semiconductor equipment
Standard published on 23.8.2024
Selected format:Fine bubble technology—Water treatment applications—Part 1:Test method for evaluating ozone fine bubble water generating systems by the decolorization of methylene blue
Standard published on 23.8.2024
Selected format:Fine bubble technology—Guideline for indicating benefits—Part 2: Applications in sustainable development goals (SDGs)
Standard published on 23.8.2024
Selected format:Insulating liquids—Methods for counting and sizing particles
Standard published on 23.8.2024
Selected format:Latest update: 2026-09-08 (Number of items: 2 300 134)
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