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Database: 189759 (19 Oct 2025)
JB/T 7948.7-2017 English PDF
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JB/T 7948.7-2017
: Methods for chemical analysis of welding fluxes. Part 7: Determination of sodium oxide and potassium oxide content
Status: Valid
JB/T 7948.7: Evolution and historical versions
Standard ID
Contents [version]
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Standard Title (Description)
Status
PDF
JB/T 7948.7-2017
English
209
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Methods for chemical analysis of welding fluxes. Part 7: Determination of sodium oxide and potassium oxide content
Valid
JB/T 7948.7-2017
JB/T 7948.7-1999
English
239
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Methods for chemical analysis of melted welding fluxes. The lead chlorofluoride-EDTA volumetric method for determination of calcium fluoride content
Obsolete
JB/T 7948.7-1999
JB/T 7948.7-1995
English
RFQ
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(Chinese Industry Standard)
Obsolete
JB/T 7948.7-1995
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Basic data
Standard ID
JB/T 7948.7-2017 (JB/T7948.7-2017)
Description (Translated English)
Methods for chemical analysis of welding fluxes. Part 7: Determination of sodium oxide and potassium oxide content
Sector / Industry
Mechanical & Machinery Industry Standard (Recommended)
Classification of Chinese Standard
J33
Classification of International Standard
25.160.20
Word Count Estimation
9,985
Date of Issue
2017-11-07
Date of Implementation
2018-04-01
Older Standard (superseded by this standard)
JB/T 7948.9-1999
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 sodium oxide and potassium oxide in the flux, reagents, instruments, samples, analysis steps, calculation of analysis results, allowable difference and so on.