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 47406-2026

Test method for volume resistivity of carbon fiber reinforced composites
Execute Date: october 2026

Standard published on 31.3.2026

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GB/T 47407-2026

Test methods for the experimental characterization of in-plane permeability of fibrous reinforcements for liquid composite moulding
Execute Date: october 2026

Standard published on 31.3.2026

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GB/T 47408-2026

Polyacrylonitrile-based oxidized fiber
Execute Date: october 2026

Standard published on 31.3.2026

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GB/T 47409-2026

Test method for mixed mode -mode interlaminar fracture toughness of carbon fiber reinforced composites—Double cantilever beam-uneven bending moment
Execute Date: october 2026

Standard published on 31.3.2026

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GB/T 47410-2026

Determination of the content of short-chain chlorinated paraffins in chlorinated paraffin products
Execute Date: october 2026

Standard published on 31.3.2026

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