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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 1424-1996 of measurement of resistivity of precious metals and their alloys 75.0 via email in 1~3 business day 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 30067-2013 Standard Terminology Relating to Metallography 1470.0 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 4335-2013 Determination of Ferrite Grain Size for Cold Rolled Low Carbon Steel Sheets 390.0 via email in 1~3 business day valid
GB/T 22587-2008 Superconductivity - Matrix to superconductor volume ratio measurement - Copper to superconductor volume ratio of Cu/Nb-Ti composite superconductors 180.0 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) 180.0 via email in 1~3 business day valid
GB/T 31352-2014 165.0 via email in 1~3 business day valid
GB/T 3310-2010 Ultrasonic testing method of copper and copper alloy bars 180.0 via email in 1~3 business day valid
GB/T 3246.1-2012 Inspection method for structure of wrought aluminum and aluminum alloy products Part 1 : Inspection method for microstructure 150.0 via email in 1~3 business day valid
GB/T 3655-2008 Methods of measurement of the magnetic properties of electrical steel sheet and strip by means of an epstein frame 160.0 via email in 1~2 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 2522-2007 Methods of test for the determination of surface insulation resistance and lamination factor of electric sheet and strip 80.0 via email in 1~2 business day valid
GB/T 26074-2010 Germanium monocrystal—Measurement of resistivity-DC linear four-point probe 180.0 via email in 1~3 business day valid
GB/T 26303.3-2010 Measuring methods for dimensions and shapes of wrought copper and copper alloys—Part 3:Sheets and strips 240.0 via email in 1~3 business day valid
GB/T 13789-2008 Methods of measurement of the magnetic properties of magnetic sheet and strip by means of a single sheet tester 300.0 via email in 1~5 business day valid
YS/T 37.3-2007 High pure germanium dioxide-Determination of arsenic content-Graphite furnace atomic absorption spectrophotometric method 60.0 via email in 1~3 business day valid
GB/T 26656-2011 Metallographic test for compacted (vermicular) graphite cast irons 210.0 via email in 1~3 business day valid
GB/T 13298-2015 Inspection methods of microstructure for metals 255.0 via email in 1~3 business day valid
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