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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
Determination of the thermal conductivity of ultra-thin ceramic substrates—Flash method
Standard published on 2.12.2025
Selected format:Metallic materials—Test method of dynamic fracture toughness at high strain rates
Standard published on 2.12.2025
Selected format:Petroleum and natural industries—Pipeline transportation systems—Test procedures for thread connectors
Standard published on 2.12.2025
Selected format:Specification for offshore conductor design, setting depth and installation
Standard published on 2.12.2025
Selected format:Metallic materials—Pin-type bearing test method
Standard published on 2.12.2025
Selected format:Fine ceramics—Determination of compressive strength of ceramic granules
Standard published on 2.12.2025
Selected format:Fine ceramics—Testing method for macro-heterogeneity in microstructure
Standard published on 2.12.2025
Selected format:Diecasting dies—Components—Part 1: Die plates
Standard published on 29.9.2017
Selected format:Diecasting dies—Components—Part 10: Ejector guide bush
Standard published on 29.9.2017
Selected format:Diecasting dies—Components—Part 11: Ejector pin
Standard published on 29.9.2017
Selected format:Latest update: 2026-11-10 (Number of items: 2 209 227)
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