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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 4702.1-1997 Methods for chemical analysis of chromium metal the ammonium ferrous sulfate-volumetric method for the determination of chromium content via email in 1-3 business day ABOLISHED please email coc@codeofchina.com for quotation
GB 223.54-1987 Methods for chemical analysis of iron,steel and alloy; The flame atomic absorption spectrophotometric method for the determination of nickel content (USD) via email in 1-3 business day VALID
GB/T 8704.3-2009 Ferrovanadium—Determination of sulfur content—The infrared absorption method and the combustion-neutralization titration method (USD) via email in 1-3 business day VALID
GB/T 4333.9-1988 Methods for chemical analysis of ferrosilicon-The flame atomic absorption spectrometric method for the determination of aluminium content (USD) via email in 1-3 business day ABOLISHED
YB/T 5316-2016 Calcium silicon alloy—Determination of carbon content—High-frequency combustion infrared absorption method via email in VALID please email coc@codeofchina.com for quotation
GB/T 24583.7-2019 Vanadium-nitrogen—Determination of oxygen content—Infrared absorption method (USD) via email in 1-3 business day VALID
GB 10323-1988 Methods for chemical analysis of ferrochromium and silicochromium-The potentiometric titration method for the determination of chromium content (USD) via email in 1-3 business day ABOLISHED
GB/T 24583.5-2019 Vanadium-nitrogen—Determination of phosphorus content—Bismuth molybdenum blue spectrophotometric method (USD) via email in 1-3 business day VALID
GB/T 5687.10-2006 Ferrochromium—Determination of manganese content—Flame atomic absorption sspectrometric method via email in 1-3 business day VALID please email coc@codeofchina.com for quotation
GB/T 8704.9-1994 Methods for chemical analysis of ferrovanadium. The potassium periodate oxidation photometric method and flame atomic absorption spectrometric method for determination of manganese content (USD) via email in 1-3 business day ABOLISHED
GB/T 223.34-2000 Methods for chemical analysis of iron,steel and alloy-The determination of hydrochloric acid-insoluble content of iron powders (USD) via email in 1-3 business day VALID
YB/T 5329-2009 Vanadium pentoxide-Determination of silicon content-The molybdenum blue spectrophotometric method via email in VALID please email coc@codeofchina.com for quotation
GB 223.67-1989 Methods for chemical analysis of iron, steel and alloy The reducing distillation-methylene blue photometric method for the determination of sulfur content (USD) via email in 1-3 business day ABOLISHED
GB/T 3653.3-1988 Methods for chemical analysis of ferroboron-The perchloric acid dehydration-gravimetric method for the determination of silicon content (USD) via email in 1-3 business day VALID
GB 3654.10-1983 Methods for chemical analysis of ferroniobium;The EDTA volumetric method for the determination of aluminum content (USD) via email in 1-3 business day VALID
YB/T 5328-2006 Methods for chemical analysis of vanadium pentoxide The potassium permanganate oxidation-ammonium ferrous sulfate titrimetric method for the determination of vanadium pentoxide content (USD) via email in 1-3 business day ABOLISHED
GB/T 5686.1-1988 Methods for chemical analysis of silicomanganese alloy-The potentiometric titration method for the determination of manganese content (USD) via email in 1-3 business day ABOLISHED
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 223.16-1991 Methods for chemical analysis of iron, steel and alloy The chromotropic acid photometric method for the determination of titanium content via email in 1-3 business day please email coc@codeofchina.com for quotation
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