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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 bearingsNeedle roller bearings with drawn cup and without inner ringBoundary dimensions,geometrical product specificationsGPSand tolerance values
Standard published on 18.10.2019
Selected format:Spherical plain bearings—Mounting dimensions
Standard published on 23.5.2023
Selected format:Animal fat and oils—Determination of melting point
Standard published on 27.2.2026
Selected format:Powder metallurgy products--Surface roughness--Parameters and their values
Standard published on 22.3.1991
Selected format:Titanium-clad copper bar
Standard published on 2.12.2025
Selected format:Welded stainless steel tubes for mechanical structures
Standard published on 29.8.2025
Selected format:Welded stainless steel pipes for fluid transport
Standard published on 18.10.2019
Selected format:Welded stainless steel pipes for fluid transport
Standard published on 18.10.2019
Selected format:Cast iron pipesfittings and accessories with flexible joint sewerage for drainage
Standard published on 25.4.2016
Selected format:
Cast iron pipes, fittings and accessories with flexible joint for building drainage
Execute Date: december 2026
Standard published on 25.5.2026
Selected format:Latest update: 2026-11-11 (Number of items: 2 209 285)
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