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GB/T 223.24-1994 Methods for chemical analysis of iron, steel and alloy.The extraction seperation-The dimethylglyoxime spectrophotometric method for the determination of nickel content 80.0 via email in 1~3 business day abolished
YB/T 4218-2010 Vanadium pentoxide - - Determination of vanadium pentoxide content - - The ammonium persulfate oxidation titrimetric method 60.0 via email in 1~3 business day valid
GB/T 31927-2015 Zinc and aluminum based coatings on steel sheets and strips― Determination of lead and cadmium contents―Inductively coupled plasma mass spectrometric method 120.0 via email in 1~3 business day valid
YB/T 178.7-2008 Silicon-aluminium alloy and silicon-barium-aluminium alloy-Determination of sulfur content-Infrared absorption method 90.0 via email in 1~3 business day valid
GB/T 4701.4-2008 Ferrotitanium - Determinatino of manganese content - Arsenite-salt and sodium-salt titrimetric method and periodate photometric method 150.0 via email in 1~3 business day valid
GB/T 4699.2-2008 Ferrochromium and ferrosilicochromium - Determination of chromium content - The ammonium persulfate oxidation titrimetric method and potentiometric titration method 150.0 via email in 1~3 business day valid
GB 223.26-1989 Methods for chemical analysis of iron steel and alloy; The thiocyanate direct photometric method for the Determination of molybderum content 45.0 via email in 1~3 business day abolished
GB/T 11170-2008 Stainless steel - Determination of multi-element contents - Spark discharge atomic emission spectrometric method (Routine method) 60.0 via email in 1 business day valid
GB/T 20127.4-2006 Steel and alloy - Determination of trace element contents Part 4: Determination of copper content by graphite furnace atomic absorption spectrometric method 105.0 via email in 1~3 business day valid
YB/T 5333-2006 Methods for chemical analysis of vanadium pentoxide The oscillopolarographic method for the determination of sulphur content 45.0 via email in 1~3 business day abolished
GB/T 20127.7-2006 Steel and alloy - Determination of trace element contents Part 7: Determination of lead content by oscillopolarographic method 75.0 via email in 1~3 business day abolished
YB/T 4217.3-2010 Coatings of the hot dip galvanizing(zinc-aluminum) sheet – Determination of Pb and Cd contents – Inductively coupled plasma atomic emission spectrometric method 75.0 via email in 1~3 business day valid
YB/T 4475-2015 Steel sheets and strips. Analysis of zinc-and alumnium-based metallic coatings. Glow-discharge optical-emission spectrometric method 500.0 via email in business day valid
GB 223.17-1989 Methods for chemical analysis of iron steel and alloy; The diantipyrylmethane photometric method for the determination of titanium content 60.0 via email in 1~3 business day valid
GB 223.66-1989 Methods for chemical analysis of iron, steel and alloy The thiocyanate-chlorpromazine hydrochloride-chloroform extraction photometric method for the determination of tungsten content 75.0 via email in 1~3 business day valid
GB 3654.8-1983 Methods for chemical analysis of ferroniobium;The chromotropic acid photometric method for the determination of titanium content 30.0 via email in 1~3 business day abolished
GB/T 5686.5-2008 Ferromanganese ferromanganese-silicon nitrogen-bearing ferromanganese and manganese metal - Determination of carbon content - The infrared absorption method the gasometric method the 180.0 via email in 1~3 business day valid
GB/T 34208-2017 Iron and steel--Determination of antimony and tin content--Inductively coupled plasma atomic emission spectrometric method 180.0 via email in 1~3 business day valid
GB 223.53-1987 Methods for chemical analysis of iron,steel and alloy; The flame atomic absorption spectrophotometric method for the determination of copper content 30.0 via email in 1~3 business day valid
GB/T 20127.1-2006 Steel and alloy - Determination of trace element contents Part 1: Determination of silver content by graphite furnace atomic absorption spectrometric method 120.0 via email in 1~3 business day valid
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