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Standards GB - Chinese national standards - Page 4680

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 46609-2025

Test method for neutron-gamma ray detection performance of scintillation crystals

Standard published on 31.10.2025

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GB/T 4661-2015

Rolling bearings—Cylindrical rollers

Standard published on 31.12.2015

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GB/T 46610-2025

Manganese and chromium ores—Experimental methods for checking the precision of moisture determination

Standard published on 31.10.2025

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GB/T 46611-2025

Lithium niobate single-crystal thin film for electro-optic modulator

Standard published on 31.10.2025

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GB/T 46612-2025

Conveyor belts—Indentation rolling resistance related to belt width—Requirements and testing

Standard published on 31.10.2025

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GB/T 46613-2025

Corrosion of metals and alloys—Test and evaluation for the corrosion of steel bar embedded in concrete structure exposed to total corrosion zones in marine environments

Standard published on 31.10.2025

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GB/T 46614-2025

Metallic materials—Instrumented indentation test—Determination of fracture toughness

Standard published on 31.10.2025

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