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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 18255-2000 Coking viscous oil products--Determination of distillation range 120.0 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 4223-2017 Iron and steel scraps 220.0 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
GB/T 223.9-2008 Iron steel and alloy - Determination of aluminium content - Chrom azurol S photometric method 100.0 via email in 1 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
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 223.5-2008 Steel and iron - Determination of acid-soluble silicon and total silicon content - Reduced molybdosilicate spectrophotometric method 80.0 via email in 1 business day valid
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 20066-2006 Steel and Iron-Sampling and Preparation of Samples for the Determination of Chemical Composition 140.0 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
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 31927-2015 Zinc and aluminum based coatings on steel sheets and strips― Determination of lead and cadmium contents―Inductively coupled plasma mass spectrometric method 100.0 via email in 1~3 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) 80.0 via email in 1 business day valid
YB/T 4219-2010 Vanadium pentoxide - Determination of phosphorus content –- The molybdobismuthylphosphoric blue spectrophotometric method 60.0 via email in 1~3 business day valid
GB/T 223.64-2008 Iron, Steel and Alloy - Determination of Manganese Content - Flame Atomic Absorption Spectrometric Method 75.0 via email in 1 business day valid
GB/T 223.84-2009 Steel and iron—Determination of titanium content—Diantipyrylmethane spectrophotometric method 80.0 via email in 1 business day valid
GB/T 223.72-2008 Iron, Steel and Alloy - Determination of Sulfur Content - Gravimetric Method 100.0 via email in 1 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
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