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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 17616-2013 Unified Numbering System for Designation of Iron, Steel and Alloy 660.0 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
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 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
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/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 223.85-2009 Steel and iron—Determination of sulfur content—Infrared absorption method after combustion in an induction furnace 80.0 via email in 1 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
GB/T 17616-1998 Unified Numbering System for Designations of Iron, Steel and Alloy 60.0 via email in 1 business day superseded
GB/T 223.75-2008 Iron steel and alloy - Determination of boron content - Methanol distillation-curcumin photometric method 60.0 via email in 1 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
GB/T 223.23-2008 Iron, Steel and Alloy-Determination of Nickel Content - The Dimethylglyoxime Spectrophotometric Method 70.0 via email in 1 business day valid
GB/T 223.80-2007 Iron steel and alloy—Determination of trace bismuth and arsenic contents—Hydride generation-atomic fluorescence spectrometric method 80.0 via email in 1 business day valid
GB/T 223.5-2008 Steel and iron - Determination of acid-soluble silicon and total silicon content - Reduced molybdosilicate spectrophotometric method 135.0 via email in 1~3 business day valid
GB/T 223.70-2008 Iron steel and alloy - Determination of iron contents - O-phenanthroline spectrophotometric method 60.0 via email in 1 business day valid
GB/T 20123-2006 Steel and iron—Determination of total carbon and sulfur content Infrared absorption method after combustion in an induction furnace (routine method) 140.0 via email in 1 business day valid
GB/T 223.64-2008 Iron, Steel and Alloy - Determination of Manganese Content - Flame Atomic Absorption Spectrometric Method 100.0 via email in 1 business day valid
GB/T 31931-2015 Zinc or zinc alloy coating on steel sheets or strips―Determination of hexavalent chromium content―1,5-Diphenylcarbohydrazide(diphenylcarbazide) spectrophotometric method 105.0 via email in 1~3 business day valid
GB/T 223.67-2008 Iron, Steel and Alloy - Determination of Sulfur Content - Methylene Blue Spectrophotometric Method 80.0 via email in 1 business day valid
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