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Standards GB - Chinese national standards - Page 390
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 1442-2004
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Driving tenons and sockets for parallelshank tools--Dimensions
Standard published on 10.2.2004
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GB/T 14420-2024
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Analysis of water used in boiler and cooling system—Determination of chemical oxygen demand—Rapid method with potassium dichromate
Standard published on 24.7.2024
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GB/T 14422-2008
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Analysis of water used in boiler and cooling system - Determination of benzotriazole
Standard published on 1.4.2008
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GB/T 14424-2008
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Industrial circulating cooling water-Determination of residual chlorine
Standard published on 1.4.2008
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GB/T 14427-2017
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Analysis of water used in boiler and cooling system—Determination of iron
Standard published on 7.9.2017
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GB/Z 14429-2005
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Telecontrol equipmet and systems Part1:General considerations Section3:Glossary
Standard published on 6.2.2005
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GB/T 1443-2016
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Self-holding tapers for machine tools and tool shanks
Standard published on 24.2.2016
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GB/T 14430-1993
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Planning of single-sideband power line carrier systems
Standard published on 5.6.1993
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GB/T 14431-1993
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Protection ratios and minimum usable field strengths required in thd radio services
Standard published on 9.6.1993
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GB/T 14433-1993
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Technical specifications for coverage networks of colour TV broadcasting
Standard published on 9.6.1993
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