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GB/T 7731.12-2008 Ferrotungsten - Determination of sulfur content - Infrared absorption method and combustion titration method 120.0 via email in 1~3 business day valid
GB/T 8704.6-2007 Ferrovanadium—Determination of silicon content—The sulphuric acid dehydration gravimetric method 120.0 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 165.0 via email in 1~3 business day valid
GB/T 24213-2009 General rules for original position statistic distribution analysis method 180.0 via email in 1~3 business day valid
GB/T 4333.2-1988 Methods for chemical analysis of ferrosilicon-The reduced molybdobismuthylphosphoric acid photometric method for the determination of phosphorus content 60.0 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 5687.10-2006 Ferrochromium - Determination of manganese content - Flame atomic absorption sspectrometric method 60.0 via email in 1~3 business day valid
GB/T 4701.1-2009 Ferrotitanium—Determination of titanium content—The ammonium ferric sulfate titration method 180.0 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
YB/T 4475-2015 Steel sheets and strips. Analysis of zinc-and alumnium-based metallic coatings. Glow-discharge optical-emission spectrometric method via email in business day valid
GB/T 5686.7-2008 Ferromanganese ferromanganese-silicon nitrogen-bearing ferromanganese and manganese metal - Determination of sulfur content - Infrared absorption method and combustion-neutralization method 150.0 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
YB/T 4220-2010 Vanadium pentoxide —Determination of sodium oxide and potaiumss oxide content—The inductively coupled plasmaatomic emission spectrometry 90.0 via email in 1~3 business day valid
GB 7731.5-1987 Methods for chemical analysis of ferrotungsten - The molybdenum blue photometric method for the determination of silicon content 30.0 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 223.6-1981 75.0 via email in 1~3 business day valid
GB/T 28898-2012 Evaluation of uncertainty in chemical composition analysis for metallurgical materials 1350.0 via email in 1~3 business day valid
GB/T 24234-2009 Cast iron—Determination of multi-element contents—Spark discharge atomic emission spectrometric method (Routine method) 180.0 via email in 1~3 business day valid
GB/T 223.72-2008 Iron, Steel and Alloy - Determination of Sulfur Content - Gravimetric Method 130.0 via email in 1 business day valid
YB/T 5313-2006 Methods for chemical analysis of calcium-silicon The EDTA titrimetric method for the determination of calcium content 45.0 via email in 1~3 business day superseded
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