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YB/T 5313-2006 Methods for chemical analysis of calcium-silicon The EDTA titrimetric method for the determination of calcium content (USD) via email in 1-3 business day ABOLISHED
GB/T 223.43-1994 Methods for chemical analysis of iron,steel and alloy Determination of tungsten content via email in 1-3 business day ABOLISHED please email coc@codeofchina.com for quotation
GB/T 7730.2-1987 Methods for chemical analysis of ferromanganese and blast furnace ferromanganese--The perchloric acid dehydration-gravimetric method for the determination of silicon content (USD) via email in 1-3 business day ABOLISHED
GB/T 4701.2-1984 Methods for chemical analysis of ferrotitanium;The gravimetric method for the determination of silicon content (USD) via email in 1-3 business day ABOLISHED
YB/T 5335-2006 Methods for chemical analysis of vanadium pentoxide The atomic absorption spectrophotometric method for the determination of sodium oxide and potassium oxide contents (USD) via email in 1-3 business day ABOLISHED
GB/T 4702.5-2008 Chromium metal - Determination of aluminium content - EDTA titrimetric method and flame atomic absorption spectrometric method (USD) via email in 1-3 business day VALID
GB/T 8704.5-1994 Methods for chemical analysis of ferrovanadium-The potentiometric method for the determination of vanadium content (USD) via email in 1-3 business day ABOLISHED
GB 223.46-1989 Methods for chemical analysis of iron, steel and alloy The flame atomic absorption spectrometric methods for the determination of magnesium content via email in 1-3 business day VALID please email coc@codeofchina.com for quotation
GB/T 5686.7-1988 Methods for chemical analysis of silicomanganese alloy; The infrared absorption method for the determination of sulfur content (USD) via email in 1-3 business day ABOLISHED
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 4333.5-1984 (USD) via email in 1-3 business day ABOLISHED
GB 223.57-1987 Methods for chemical analysis of iron,steel and alloy; The extraction-absorption catalytic polarographic method for the determination of cadmium content (USD) via email in 1-3 business day
GB/T 8705.3-1988 Methods for chemical analysis of ferrophosphorus; The infrared absorption method for the determination of carbon content (USD) via email in 1-3 business day ABOLISHED
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 4702.6-2016 Chromium metal—Determination of iron,aluminium,silicon and coppercontent—Inductively coupled plasma atomic emission spectrometry method (USD) via email in 1-3 business day VALID
GB/T 4702.1-2016 Chromium metal—Determination of chromium content—The ammonium ferrous sulfate titrimetric method (USD) via email in 1-3 business day VALID
GB/T 8704.5-2020 Ferrovanadium—Determination of vanadium content—The ammonium ferrous sulfate titrimetric method and the potentiometric titrimetric method (USD) via email in 1-3 business day TO BE VALID
YB/T 178.7-2008 Silicon-aluminium alloy and silicon-barium-aluminium alloy-Determination of sulfur content-Infrared absorption method (USD) via email in 1-3 business day VALID
YB/T 4532-2016 Ferrophosphorus—Determination of phosphorus content—Acid-base titration method via email in VALID please email coc@codeofchina.com for quotation
GB/T 28898-2012 Evaluation of uncertainty in chemical composition analysis for metallurgical materials (USD) via email in 1-10 business day VALID
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