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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 140.0 via email in 1~3 business day valid
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/T 223.31-2008 Iron steel and alloy - Determination of arsenic content -Distillation-molybdenum blue spectrophotometric method 65.0 via email in 1 business day valid
GB/T 4223-2017 Iron and steel scraps 260.0 via email in 1~3 business day to be 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
GB/T 223.73-2008 Iron steel and alloy - Determination of iron contents - Titanium trichloride-potassium dichromate titration method 90.0 via email in 1 business day valid
GB/T 223.29-2008 Iron steel and alloy - Determination of lead content - Carrier precipitation-xylenol orange spectrophotometric method 40.0 via email in 1 business day valid
GB/T 31926-2015 Zinc and aluminum based coatings on steel sheets and strips―Determination of lead,cadmium and chromium contens―Glow discharge atomic emission spectrometry method 240.0 via email in 1~3 business day valid
GB/T 24520-2009 Cast iron and low alloy steel—Determination of lanthanum, cerium and magnesium content—Inductively coupled plasma atomic emission spectrometric method 240.0 via email in 1~3 business day valid
GB/T 17616-2013 Unified Numbering System for Designation of Iron, Steel and Alloy 620.0 via email in 1~3 business day valid
GB/T 223.82-2007 Steel and iron—Determination of hydrogen content—Inert gas impulse fusion heat conductivity method 40.0 via email in 1 business day valid
GB/T 18255-2000 Coking viscous oil products--Determination of distillation range 120.0 via email in 1~3 business day valid
GB/T 15006-2009 General rules of dimensions shape surface quality test method and inspection for elastic alloys 180.0 via email in 1~3 business day valid
GB/T 14203-2016 General rules for spark discharge atomic emission spectrometry 255.0 via email in 1~3 business day valid
GB/T 223.86-2009 Steel and iron—Determination of total carbon content—Infrared absorption method after combustion in an induction furnace 80.0 via email in 1 business day valid
YB/T 4217.1-2010 Coatings of the hot dip galvanizing(zinc-aluminum) sheet – Determination of hexavalent Cr content – Spectrophotometric method 75.0 via email in 1~3 business day valid
YB/T 4217.2-2010 Coatings of the hot dip galvanizing(zinc-aluminum) sheet – Determination of Hg content – Atomic absorption spectrometric method 75.0 via email in 1~3 business day valid
GB/T 20066-2006 Steel and Iron-Sampling and Preparation of Samples for the Determination of Chemical Composition 190.0 via email in 1 business day valid
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