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Standards GB - Chinese national standards - Page 4539
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 45464-2025
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Test method for modifier content of SBS modified asphalt for road engineering
Standard published on 28.3.2025
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GB/T 45465.1-2025
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Testing and calculating methods for seasonal performance factor of energy recovery ventilators for outdoor air handling—Part 1:Seasonal performance factor of sensible heating recovery
Standard published on 28.3.2025
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GB/T 45466-2025
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Gas-fired clothes dryer
Standard published on 28.3.2025
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GB/T 45467-2025
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Fiber reinforced polymer composite tubes for confining concrete
Standard published on 28.3.2025
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GB/T 45468-2025
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Microbeam analysis—FIB-SEM imaging and analysis method for 3D micro-pore structure of rock sample
Standard published on 28.3.2025
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GB/T 45469-2025
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Microbeam analysis—Transmission electron microscopy—Preparation methods of ultrathin section of polymer composites
Standard published on 28.3.2025
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GB/T 4547-2007
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Glass containers - Thermal shock resistance and thermal shock endurance - Test methods
Standard published on 5.12.2007
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GB/T 45470-2025
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Recycled carbon fiber for cement concrete
Standard published on 28.3.2025
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GB/T 45471-2025
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Test method for mode interlaminar fracture toughness of carbon fiber reinforced composite materials—Edge crack torsion method
Standard published on 28.3.2025
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GB/T 45472-2025
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Prefabricated insulation pipes for overhead and utility tunnel
Standard published on 28.3.2025
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