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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
Plain bearings - Bearing fatigue - Part 4: Test on half-bearings of a metallic multilayer bearing materials
Standard published on 26.5.2009
Selected format:Plain bearings—Multilayer materials for thin-walled plain bearings
Standard published on 30.12.2022
Selected format:Guidance for selection of vibration generator system
Standard published on 26.2.2001
Selected format:Vibration generating machines - Guidance for selection - Part 1: Equipment for environmental testing
Standard published on 24.4.2009
Selected format:Plain bearings—Metallic multilayer plain bearings—Part 1: Non-destructive ultrasonic testing of bond of thickness greater than or equal to 0.5 mm
Standard published on 27.11.2023
Selected format:Plain bearings—Metallic multilayer plain bearings—Part 2:Destructive testing of bond for bearing metal layer thicknesses greater than or equal to 2 mm
Standard published on 27.11.2023
Selected format:Plain bearings—Metallic multilayer plain bearings—Part 3: Non-destructive penetrant testing
Standard published on 9.3.2021
Selected format:Plain bearings—Metallic multilayer plain bearings—Part 4:Non-destructive ultrasonic transmission testing of bond of thickness greater than or equal to 0.3 mm
Standard published on 9.3.2021
Selected format:Specification for flexible multilayer printed boards
Standard published on 31.10.2025
Selected format:Specification for flex-rigid multilayer printed boards with through connections
Standard published on 7.3.2001
Selected format:Latest update: 2026-09-11 (Number of items: 2 300 165)
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