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Database: 189760 (18 Oct 2025)
JB/T 7948.9-2017 English PDF
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JB/T 7948.9-2017
: Methods for chemical analysis of welding fluxes. Part 9: Determination of calcium oxide and magnesium oxide content
Status: Valid
JB/T 7948.9: Evolution and historical versions
Standard ID
Contents [version]
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Standard Title (Description)
Status
PDF
JB/T 7948.9-2017
English
169
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Methods for chemical analysis of welding fluxes. Part 9: Determination of calcium oxide and magnesium oxide content
Valid
JB/T 7948.9-2017
JB/T 7948.9-1999
English
199
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Methods for chemical analysis of melted welding fluxes. The flame photometric method for determination of sodium oxide and potassium oxide content
Obsolete
JB/T 7948.9-1999
JB/T 7948.9-1995
English
RFQ
ASK
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(Chinese Industry Standard)
Obsolete
JB/T 7948.9-1995
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Basic data
Standard ID
JB/T 7948.9-2017 (JB/T7948.9-2017)
Description (Translated English)
Methods for chemical analysis of welding fluxes. Part 9: Determination of calcium oxide and magnesium oxide content
Sector / Industry
Mechanical & Machinery Industry Standard (Recommended)
Classification of Chinese Standard
J33
Classification of International Standard
25.160.20
Word Count Estimation
7,777
Date of Issue
2017-11-07
Date of Implementation
2018-04-01
Older Standard (superseded by this standard)
JB/T 7948.12-1999
Regulation (derived from)
Ministry of Industry and Information Technology Bulletin 2017 No. 48
Issuing agency(ies)
Ministry of Industry and Information Technology
Summary
This standard specifies the principle of determination of calcium oxide and magnesium oxide in flux, reagents, instruments, samples, analysis steps, calculation of analysis results, allowable difference and so on.