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Standards GB - Chinese national standards - Page 4677
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
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GB/T 46583-2025
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Test methods for dielectric properties of microwave dielectric ceramics—Open cavity method and closed cavity method
Standard published on 31.10.2025
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GB/T 46584-2025
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Fine ceramics interface—Test method for tensile and shear fatigue properties at room temperature under constant amplitude—Crossed method
Standard published on 31.10.2025
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GB/T 46585-2025
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Thermal insulating products for building applications—Determination of linear dimensions of test specimens
Standard published on 31.10.2025
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GB/T 46586-2025
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Fine ceramics—Measurement of viscosity of ceramic slurry—Rotational viscometer method
Standard published on 31.10.2025
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GB/T 46587-2025
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Test method for air-purification performance of photocatalytic materials and products—Removal of methyl mercaptan
Standard published on 31.10.2025
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GB/T 46588-2025
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Fine ceramics—Determination of compaction properties of powders
Standard published on 31.10.2025
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GB/T 46589-2025
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Measurement and calculation method of thermal equilibrium and thermal efficiency of ceramic spray dryer
Standard published on 31.10.2025
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GB/T 4659-1984
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Typemain size and mounted dimension of headlamps for motor vehicle
Standard published on 14.8.1984
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GB/T 46590-2025
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Metallic materials—Method of wide plate tensile test
Standard published on 31.10.2025
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GB/T 46591.1-2025
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Metallic materials—In-situ testing method—Part 1: Tensile test
Standard published on 31.10.2025
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