Code of China Chinese Standard Classification Professional Classification ICS Classification Latest
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GB/T 24273-2009 Test method for electrical properties of electrical contact materials 90.0 via email in 1~3 business day valid
JB/T 6237.10-2008 Test methods for chemical analysis of silver powder for electric contact material—Part 10:Determinatiln of silver nitrate content 60.0 via email in 1~3 business day valid
JB/T 6454-2008 Technical specification for heating resistance alloys 210.0 via email in 1~3 business day valid
JB/T 9548.5-1999 Methods for chemical analysis of iron-chromium-aluminium alloys The silicomolybdate blue photometric method for the determination of silicon content 40.0 via email in 1 business day superseded
JB/T 9552.8-1999 Methods for chemical analysis of copper-chromium-zirconium alloys The determination of magnesium by chromotrope 2R photometric method 60.0 via email in 1~3 business day valid
GB/T 13888-2009 Method of measurement of the coercivity of magnetic materials in an open magnetic circuit 180.0 via email in 1~3 business day valid
GB/T 24268-2009 Test methods for chemical analysis of silver-tin oxide electric contact material 120.0 via email in 1~3 business day valid
JB/T 9548.11-1999 Methods for chemical analysis of iron-chromium-aluminium alloys The phosphovanadomoly bdate yellow extraction photometric method for the determination of phosphorus content 40.0 via email in 1 business day superseded
JB/T 7774.1-2008 Test methods for chemical analysis of silver-zinc oxide electric contact material -Part 1:Determination of zinc content 60.0 via email in 1~3 business day valid
JB/T 10872-2008 Technical Specification for Electric Contacts of Trimetal Rivet Type 90.0 via email in 1~3 business day valid
JB/T 9548.3-1999 Methods for chemical analysis of iron-chromium-aluminium alloys The sodium periodate photometric method for the determination of manganese content 40.0 via email in 1 business day superseded
JB/T 7780.4-2008 Methods for measuring mechanical and physical properties of wires for rivet contacts-Part 4:Tensile test 120.0 via email in 1~3 business day valid
JB/T 7780.3-2008 Methods for measuring mechanical and physical properties of wires for rivet contacts-Part 3:Determination of resistivity 60.0 via email in 1~3 business day valid
GB/T 5587-2003 Basic shapes, dimensions, symbols and notations of silver based electrical contacts 150.0 via email in 1~3 business day abolished
JB/T 9548.7-1999 Methods for chemical analysis of iron-chromium-aluminium alloys The dimethylglyoxime photometric method for the determination of nickel content 30.0 via email in 1 business day superseded
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
GB/T 5586-1998 Test methods for essential porperty of electric contact material 150.0 via email in 1~3 business day abolished
JB/T 9552.2-1999 Methods for chemical analysis of copper-chromium-zirconium alloys The determination of chromium by persulfate oxidation volumetric method 30.0 via email in 1~3 business day valid
JB/T 7777.4-2008 Test methods for chemical analysis of silver-tin oxide-indium oxide electric contact material-Part 4:Determination of zinc content 60.0 via email in 1~3 business day valid
JB/T 7097-2008 Specification for copper-bismuth-aluminium electric contact material 90.0 via email in 1~3 business day valid
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