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GB/T 2522-2017 Methods of test for the determination of coating insulation resistance and coating adhesion of electrical strip and sheet 140.0 via email in 1~3 business day to be valid
YS/T 799-2012 Test Method for the Surface Cleaness of Aluminum and Aluminum Alloy 90.0 via email in 1~3 business day valid
GB/T 24177-2009 Standard test methods for characterizing duplex grain sizes 315.0 via email in 1~3 business day valid
GB/T 1838-2008 Test methods of tin coating mass for electrolytic tinplate 180.0 via email in 1~3 business day valid
GB/T 32790-2016 Methods for evaluating the weld quality of seam welds in aluminium and aluminium alloy extrusion 100.0 via email in 1~3 business day valid
GB/T 1423-1996 of measurement of density for precious metals and their alloys 75.0 via email in 1~3 business day valid
YS/T 685-2009 Analyser of hydrogen in liquid aluminium and aluminium alloys 120.0 via email in 1~3 business day valid
GB/T 26303.2-2010 Measuring methods for dimensions and shapes of wrought copper and copper alloy—Part 2:Rod,wire and profile 300.0 via email in 1~3 business day valid
YS/T 347-2004 Copper and copper alloys - Estimation of average grain size 150.0 via email in 1~3 business day valid
GB/T 3656-2008 Method of coercivity measurement for magnetically soft materials by pull out procedure 105.0 via email in 1~3 business day valid
GB/T 13298-2015 Inspection methods of microstructure for metals 160.0 via email in 1~3 business day valid
GB/T 5248-2016 Electromagnetic (eddy-current) examination of copper and copper alloy seamless tube 270.0 via email in 1~3 business day valid
YS/T 37.1-2007 High pure germanium dioxide-Determination of chlorine content-Mercuric sulfocyanide spectrophotometric method 60.0 via email in 1~3 business day valid
GB/T 2523-2008 Measuring method of surface roughness and peak count for cold-rolled metal sheet (strip) 170.0 via email in 1~3 business day valid
GB/T 224-2008 Determination of depth of decarburization of steels 80.0 via email in 1 business day valid
GB/T 30655-2014 Test methods for internal quantum efficiency of nitride LED epitaxial layers 150.0 via email in 1~3 business day valid
YS/T 336-2010 Method of fracture test for tube and rod of copper and copper alloys,nickel and nickel alloys 105.0 via email in 1~3 business day valid
GB/T 13305-2008 Micrographic method for determining area content of the α-phases in stainless steels 270.0 via email in 1~3 business day valid
GB/T 31522-2015 Matrix to superconductor volume ratio measurement―Copper to non-copper volume ratio of Nb 3Sn composite superconducting wires 350.0 via email in 1~5 business day valid
GB/T 226-2015 Test method for macrostructure and defect of steel by etching 100.0 via email in 1 business day valid
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