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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
Corrosion of metals and alloys—Measurement of the electrochemical critical localized corrosion temperature (E-CLCT) for Ti alloys fabricated via the additive manufacturing method
Standard published on 29.8.2025
Selected format:Nitrile cleanroom gloves
Standard published on 29.8.2025
Selected format:Natural rubber latex cleanroom gloves
Standard published on 29.8.2025
Selected format:Flexible hose and hose assemblies for fracturing—Specification
Standard published on 29.8.2025
Selected format:Building and civil engineering sealants—Determination of application life
Standard published on 29.8.2025
Selected format:Metallic materials—Steel—Method of test for the determination of brittle crack arrest toughness, Kca
Standard published on 29.8.2025
Selected format:Corrosion of metals and alloys—Accelerated test method for soil corrosion
Standard published on 29.8.2025
Selected format:Inshell hazelnuts and kernels
Standard published on 5.10.2025
Selected format:Measurement and calculation method of thermal equilibrium and thermal efficiency of domestic ceramics electric-heated kiln
Standard published on 29.8.2025
Selected format:Electronic gas—Noble gas
Standard published on 5.10.2025
Selected format:Latest update: 2026-11-10 (Number of items: 2 209 227)
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