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YB/T 4991-2022 PDF English

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YB/T 4991-2022: (Determination of content of n-heptane insoluble matter in coking products)
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YB/T 4991-2022English139 Add to Cart 3 days [Need to translate] (Determination of content of n-heptane insoluble matter in coking products)

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Basic data

Standard ID YB/T 4991-2022 (YB/T4991-2022)
Description (Translated English) (Determination of content of n-heptane insoluble matter in coking products)
Sector / Industry Ferrous Metallurgy Industry Standard (Recommended)
Classification of Chinese Standard G18
Classification of International Standard 71.080
Word Count Estimation 7,735
Date of Issue 2022-09-30
Date of Implementation 2023-04-01
Issuing agency(ies) Ministry of Industry and Information Technology
Summary This standard specifies the reagent materials, instruments and equipment, test procedures, data processing, allowable difference, etc. for the determination of n-heptane insoluble content of coking products. This standard applies to the determination of the content of n-heptane insolubles in coking raw material oil for carbon black, coal tar, coal tar pitch and other coking products.

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