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Standards GB - Chinese national standards - Page 4715
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 46830.1-2026
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Plastics—Liquid-crystal polymersLCPmoulding and extrusion materials—Part 1:Designation system and basis for specifications
Execute Date: december 2026
Standard published on 25.5.2026
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GB/T 46830.2-2026
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Plastics—Liquid-crystal polymersLCPmoulding and extrusion materials—Part 2: Preparation of test specimens and determination of properties
Execute Date: december 2026
Standard published on 25.5.2026
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GB/T 46831-2025
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Plastics—Determination of isotactic index for polypropylene (PP)—Low-resolution nuclear magnetic resonance spectrometry
Standard published on 2.12.2025
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GB/T 46832-2025
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Plastics—Determination of abrasive wear—Reciprocating linear sliding motion method
Standard published on 2.12.2025
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GB/T 46833-2025
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Plastics—Fire tests—Standard ignition sources
Standard published on 2.12.2025
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GB/T 46834-2025
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Plastics—Determination of image clarity
Standard published on 2.12.2025
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GB/T 46835-2025
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Plastics—Friction and wear by sliding—Identification of test parameters
Standard published on 2.12.2025
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GB/T 46836-2025
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Plastics—Reaction to fire—Test method for flame spread and combustion product release from vertically oriented specimens
Standard published on 2.12.2025
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GB/T 46837-2025
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Plastics—Elasticity index—Determination of elastic property of melts
Standard published on 2.12.2025
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GB/T 46838-2025
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Plastics—Determination of fracture toughness(GIC and KIC) at moderately high loading rates(1m/s)
Standard published on 2.12.2025
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