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Standards GB - Chinese national standards - Page 5310
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 7253-2019
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Insulators for overhead lines with a nominal voltage above 1 000V—Ceramic or glass insulator units for a.c.systems—Characteristics of insulator units of the cap and pin type
Standard published on 10.12.2019
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GB/T 7254-1995
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Performanceand methods of the second order digital multiplex equipment operating at 8448 kbit/s and using positive justification
Standard published on 6.4.1995
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GB/T 7255-1998
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Single sideband power-line carrier terminals
Standard published on 16.3.1998
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GB/T 7256.1-2022
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Lighting fixtures for civil airport—Part 1General requirements
Standard published on 15.4.2022
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GB/T 7256.2-2023
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Lighting fixtures for civil airport—Part 2: Sequence flashing light and runway threshold identification light
Standard published on 28.12.2023
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GB/T 7256.3-2023
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Lighting fixtures for civil airport—Part 3: Precision approach path indicator
Standard published on 28.12.2023
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GB/T 7256.4-2023
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Lighting fixtures for civil airport—Part 4:Wind direction indicator
Standard published on 28.12.2023
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GB/T 7256.5-2023
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Lighting fixtures for civil airport—Part 5: Aeronautical beacon
Standard published on 28.12.2023
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GB/T 7257-2013
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Measurement methods of parameter for helium-neon laser
Standard published on 17.12.2013
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GB 7258-2017
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Technical specifications for safety of power-driven vehicles operating on roads
Standard published on 29.9.2017
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