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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
Rolling bearings - Internal clearance - Part 2: Axial internal clearance for four-point-contact ball bearings
Standard published on 18.9.2013
Selected format:Limits of leachable harmful metal element in wall materials
Standard published on 1.8.2025
Selected format:Greenhouse gases—Quantification method and requirement of product carbon footprint—Electrical and electronic appliances
Standard published on 29.8.2025
Selected format:Anaesthetic and respiratory equipment—Low-pressure hose assemblies for use with medical gases
Standard published on 1.8.2025
Selected format:Plastics—Recycled plastics—Guidance for traceability and assessment of environmental aspects
Standard published on 1.8.2025
Selected format:Acoustics—Determination of sound power levels of noise sources using sound pressure—Engineering methods for small, movable sources in reverberant fields—Part 2: Methods for special reverberation test rooms
Standard published on 1.8.2025
Selected format:Concrete pavement machine and equipment—Terminology
Standard published on 1.8.2025
Selected format:Road construction and maintenance equipment—Bituminous binder sprayers and synchronous bituminous binder sprayers-chip spreaders—Terminology and commercial specifications
Standard published on 1.8.2025
Selected format:Asphalt storage, melting and heating units—Terminology
Standard published on 1.8.2025
Selected format:Electric earth-moving machinery—Methods of noise test
Standard published on 29.8.2025
Selected format:Latest update: 2026-08-26 (Number of items: 2 298 418)
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