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Standards GB - Chinese national standards - Page 192
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 1251.3-2008
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Ergonomics - system of auditory and visual danger and information signals
Standard published on 16.7.2008
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GB/T 12510-2015
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Information technology—Universal keyboard layout of the alphanumeric zone for Uyghur
Standard published on 11.9.2015
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GB/T 12511-1990
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Fibre optic switches--Part 1:Generic specification
Standard published on 15.11.1990
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GB/T 12512-1990
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Fibre optic attenuators--Part 1:Generic specification
Standard published on 15.11.1990
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GB/T 12513-2006
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Fire-resistance tests - Elements of building construction - Glazed elements
Standard published on 14.3.2006
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GB 12514-2026
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Technical specifications for fire couplings
Execute Date: february 2027
Standard published on 28.1.2026
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GB 12514.1-2005
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Fire couoling -- Part 1: General technical conditions for fire coupling
Standard published on 28.9.2005
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GB 12514.2-2006
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Fire coupling - Part 2: Patterns and basic parameters for fire snap-types coupling
Standard published on 26.1.2006
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GB 12514.3-2006
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Fire coupling - Part 3: Patterns and basic parameters for fire insertion-type coupling
Standard published on 26.1.2006
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GB 12514.4-2006
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Fire coupling - Part 4: Patterns and basic parameters for fire screw-type coupling
Standard published on 26.1.2006
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