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Standards GB - Chinese national standards - Page 151
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 11985-1989
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Surface active agents--Determination of interfacial tension--Drop volume method
Standard published on 25.12.1989
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GB/T 11986-1989
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Surface active agents--Powders and Granules--Measurement of the angle of repose
Standard published on 25.12.1989
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GB/T 11987-2022
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Surface active agents—Technical alkane sulphonates—Determination of total alkane sulphonates content
Standard published on 30.12.2022
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GB/T 11988-2008
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Surface active agents - Technical alkane sulfonates - Determination of mean relative molecular mass and content of the alkane monosulfonate
Standard published on 30.12.2008
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GB/T 11989-2020
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Surface active agents—Test methods of technical sodium alkylarylsulphonates (excluding benzene derivatives)
Standard published on 28.4.2020
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GB/T 11991-2008
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Determination of reversible swelling of exchange resins
Standard published on 30.6.2008
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GB/T 11992-2008
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Determination of exchange capacity of strong basic anion exchange resins in chloride form
Standard published on 4.8.2008
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GB/T 12-2013
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Cup head square neck bolts
Standard published on 9.6.2013
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GB/T 120.1-2000
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Parallel pins with internal threadof unhardened steel and austenitic stainless steel
Standard published on 26.9.2000
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GB/T 120.2-2000
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Parallel pins with internal threadof hardened steel and martensitic stainless steel
Standard published on 26.9.2000
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