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Standards GB - Chinese national standards - Page 529
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 15447-2008
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Conversion method of absorbed doses in different materials irradiated by X, rays and election beams
Standard published on 19.9.2008
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GB/T 15448-2013
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Fixed capacitors for use in electronic equipment—Part 19: Sectional specification—Fixed metallized polyethylene-terephthalate film dielectric surface mount d.c.capacitors
Standard published on 31.12.2013
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GB/T 15449-1995
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Blank detail-specification for field-effect transistors for case-rated switching application
Standard published on 5.1.1995
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GB/T 1545-2008
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Paper, board and pulp - Determination of acidity or alkalinity
Standard published on 19.8.2008
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GB/T 15451-2006
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Industrial circulating cooling water - Determination of total and composite alkalinity
Standard published on 29.12.2006
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GB/T 15452-2009
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Industrial circulating cooling water - Determination of calcium and magnesium - EDTA titration method
Standard published on 18.5.2009
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GB/T 15453-2018
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Determination of chloride in water for industrial circulating cooling system and boiler
Standard published on 7.6.2018
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GB/T 15454-2009
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Industrial circulating cooling water - Determination of sodiumpotassium magnesium and calcium - Ion chromatography
Standard published on 18.5.2009
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GB/T 15456-2019
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Determination of the chemical oxygen demand in industrial circulating cooling water—Permanganate index method
Standard published on 30.8.2019
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GB/T 15458-2006
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Determination of abrasion index of coal
Standard published on 12.9.2006
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