Code of China Chinese Standard Classification Professional Classification ICS Classification Latest
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JB/T 7777.5-2008 Test methods for chemical analysis of silver-tin oxide-indium oxide electric contact material-Part 5:Determination of nickel zinc and indium contents 120.0 via email in 1~3 business day valid
GB/T 8320-2003 Copper-tungsten and silver-tungsten electrical contacts 250.0 via email in 1~3 business day superseded
JB/T 6326.7-2008 Test methods for chemical analysis of Ni-Cr and Ni-Cr-Fe alloy—Part 7:Determination of carbon content 150.0 via email in 1~3 business day valid
JB/T 7776.1-2008 Test methods for chemical analysis silver-cadmium oxide electric contact material—Part 1:Determination of cadmium content 60.0 via email in 1~3 business day valid
JB/T 4107.2-2014 Chemical Analyses Method for Electrical Contact Materials - Part 2: Determination of Copper Content in the Copper Tungsten 75.0 via email in 1~3 business day valid
GB/T 5587-2016 Basic shapes,dimensions,symbols and notations of silver based electrical contacts 255.0 via email in 1~3 business day valid
JB/T 7774.5-2008 Test methods for chemical analysis of silver-zinc oxide electric contact material -Part 5:Determination of magnesium content 90.0 via email in 1~3 business day valid
GB/T 5587-2003 Basic shapes, dimensions, symbols and notations of silver based electrical contacts 180.0 via email in 1~3 business day abolished
JB/T 9550-2011 Technical specification for copper-bismuth-silver electrical contact materials 150.0 via email in 1~3 business day valid
JB/T 6237.5-2008 Test methods for chemical analysis of silver powder for electric contact material—Part 5:Determinatiln of natrium content 90.0 via email in 1~3 business day valid
JB/T 8632-2011 Guide for test method of arc erosion of electrical contact materials 80.0 via email in 1~3 business day valid
JB/T 6326.6-2008 Test methods for chemical analysis of Ni-Cr and Ni-Cr-Fe alloy—Part 6:Determination of aluminum content 120.0 via email in 1~3 business day valid
GB/T 12940-2008 Technical specification for silver-graphite electrical contacts 180.0 via email in 1~3 business day valid
JB/T 8753-1998 Metallographic atlas of the electric contact materials 1080.0 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 90.0 via email in 1~3 business day valid
JB/T 9552.1-1999 Methods for chemical analysis of copper-chromium-zirconium alloys The determination of copper by electrolytic method 90.0 via email in 1~3 business day valid
JB/T 7774.4-2008 Test methods for chemical analysis of silver-zinc oxide electric contact material -Part 4:Determination of nickel content 90.0 via email in 1~3 business day valid
JB/T 7092-2008 Method for measuring basic properties of bimetal contacts 135.0 via email in 1~3 business day valid
JB/T 8985-1999 Metallographic examination of the electric materials 120.0 via email in 1~3 business day valid
GB 5586-1985 105.0 via email in 1~3 business day superseded
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