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JB/T 7780.2-2008 Methods for measuring mechanical and physical properties of wires for rivet contacts-Part 2:Determination of hardness 75 (USD) via email in 1-3 business day VALID
JB/T 7776.7-1995 via email in 1-3 business day ABOLISHED please email coc@codeofchina.com for quotation
JB/T 6326.8-1992 60 (USD) via email in 1-3 business day ABOLISHED
JB/T 9548.6-1999 Methods for chemical analysis of iron-chromium-aluminium alloys The persulfate oxidation volumetric method for the determination of chromium content via email in 1-3 business day ABOLISHED please email coc@codeofchina.com for quotation
JB/T 9552.6-1999 Methods for chemical analysis of copper-chromium-zirconium alloys The determination of zirconium by arsenazo Ⅲ photometric method after fuse with potassium phrosuifate 75 (USD) via email in 1-3 business day VALID
JB/T 6237.11-1992 via email in 1-3 business day ABOLISHED please email coc@codeofchina.com for quotation
JB/T 8505-1996 45 (USD) via email in 1-3 business day ABOLISHED
JB/T 6454-2008 Technical specification for heating resistance alloys 225 (USD) via email in 1-3 business day VALID
JB/T 7780.5-2008 Methods for measuring mechanical and physical properties of wires for rivet contacts-Part 5:torsion test 75 (USD) via email in 1-3 business day VALID
GB 12940-1991 Technical specification for silver-graphite electrical contacts via email in 1-3 business day ABOLISHED please email coc@codeofchina.com for quotation
JB/T 9552.9-1999 Methods for chemical analysis of copper-chromium-zirconium alloys The determination of silicon by silicomoty benum blue photometric method after extraction with methyl isobutyl ketone 75 (USD) via email in 1-3 business day VALID
JB/T 6326.2-2008 Test methods for chemical analysis of Ni-Cr and Ni-Cr-Fe alloy—Part 2:Determination of chromium content 90 (USD) via email in 1-3 business day VALID
JB/T 6237.6-1992 via email in 1-3 business day ABOLISHED please email coc@codeofchina.com for quotation
JB/T 7092-2008 Method for measuring basic properties of bimetal contacts 150 (USD) via email in 1-3 business day VALID
GB/T 26867-2011 Specification for CuCr electrical contact 180 (USD) via email in 1-3 business day VALID
JB/T 7776.4-2008 Test methods for chemical analysis silver-cadmium oxide electric contact material—Part 4:Determination of tin content 75 (USD) via email in 1-3 business day VALID
JB/T 7774.2-2008 Test methods for chemical analysis of silver-zinc oxide electric contact material -Part 2:Determination of aluminium content 75 (USD) via email in 1-3 business day VALID
ZB K 14003.4-1988 via email in ABOLISHED please email coc@codeofchina.com for quotation
JB/T 6237.3-2008 Test methods for chemical analysis of silver powder for electric contact material—Part 3:Determinatiln of iron content 75 (USD) via email in 1-3 business day VALID
JB/T 7774.5-1995 via email in 1-3 business day ABOLISHED please email coc@codeofchina.com for quotation
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