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Standards GB - Chinese national standards - Page 4915
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 51348-2019
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Code for Electrical Design for Civil Building
Standard published on 22.11.2019
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GB/T 51349-2019
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Design standard for occupational safety and health in forestry industry ngineering
Standard published on 24.1.2019
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GB 5135.1-2019
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Automatic sprinkler system—Part 1:Sprinklers
Standard published on 17.12.2019
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GB 5135.10-2006
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Automatic sprinkler system-Part10:Pressure switch
Standard published on 7.4.2006
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GB 5135.11-2006
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Automatic sprinkler system-Part 11:grooved couplings and fittings
Standard published on 7.4.2006
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GB 5135.11-2025
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Automatic sprinkler systems—Part 11: Grooved pipe couplings and fittings
Execute Date: november 2026
Standard published on 31.10.2025
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GB 5135.13-2006
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Automatic sprinkler system Part 13:Performance requirements and test methods of drencher head
Standard published on 7.4.2006
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GB 5135.14-2011
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Automatic sprinkler systems—Part 14:Preaction devices
Standard published on 29.9.2011
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GB 5135.15-2008
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Automatic sprinkler system - Part 15: Domestic sprinklers
Standard published on 4.6.2008
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GB 5135.16-2010
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Automatic sprinkler system - Part 16Flexible sprinkler hose with fittings
Standard published on 26.9.2010
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