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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) via email in 1-3 business day VALID please email coc@codeofchina.com for quotation
GB/T 223.72-2008 Iron steel and alloy - Determination of sulfur content - Gravimetric method (USD) via email in 1-3 business day VALID
GB/T 223.89-2019 Iron , steelandalloy — Determination of tellurium content —Hydride generation-atomic fluorescence spectrometric method (USD) via email in 1 business day VALID
GB/T 4223-2017 Iron and steel scraps (USD) 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 (USD) via email in 1-3 business day VALID
YB/T 4217.1-2010 Coatings of the hot dip galvanizing(zinc-aluminum) sheet – Determination of hexavalent Cr content – Spectrophotometric method via email in VALID please email coc@codeofchina.com for quotation
YB/T 4217.2-2010 Coatings of the hot dip galvanizing(zinc-aluminum) sheet – Determination of Hg content – Atomic absorption spectrometric method via email in VALID please email coc@codeofchina.com for quotation
GB/T 223.11-2008 Iron steel and alloy - Determination of chromium content - Visual titration or potentiometric titration method (USD) via email in 1-3 business day VALID
GB/T 223.31-2008 Iron steel and alloy - Determination of arsenic content -Distillation-molybdenum blue spectrophotometric method (USD) via email in 1-3 business day VALID
GB/T 28898-2012 Evaluation of uncertainty in chemical composition analysis for metallurgical materials (USD) via email in 1-10 business day VALID
YB/T 4219-2010 Vanadium pentoxide -Determination of phosphorus content –- The molybdobismuthylphosphoric blue spectrophotometric method via email in VALID please email coc@codeofchina.com for quotation
GB/T 223.88-2019 Iron,steel and alloy—Determination of calcium and magnesium contents—Inductively coupled plasma atomic emission spectrometric method (USD) 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 (USD) via email in 1-3 business day VALID
GB/T 223.75-2008 Iron steel and alloy - Determination of boron content - Methanol distillation-curcumin photometric method (USD) 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 (USD) 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 (USD) via email in 1 business day VALID
GB/T 18255-2000 Coking viscous oil products--Determination of distillation range (USD) 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 (USD) 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 (USD) via email in 1-3 business day VALID
GB/T 223.81-2007 Iron steel and alloy—Determination of total aluminum and total boron contents—Microwave digestion-inductively coupled plasma mass spectrometric method (USD) via email in 1-3 business day VALID
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