GB/T 26023-2010 High precision tungsten plate of resisting ray

GB/T 3850-1983 Impermeable sintered metal materials and hardmetals—determination of density GB/T 3850-2015 Impermeable sintered metal materials and hardmetals—Determination of density GB/T 4193-1984 Method for measuring the density of the fine wire and ribbon of tungsten and molybdenum used in electric light sources and vacuumtubes GB/T 4324.1-2012 Methods for chemical analysis of tungsten—Part 1:Determination of lead content—Flame atomic absorption spectrometry GB/T 4324.1-1984 Methods for chemical analysis of tungsten--The square wave polarographic method for the successive determination of lead and cadmium contents GB/T 4324.2-2012 Methods for chemical analysis of tungsten—Part 2:Determination of bismuth content—Hydrogenate atomic absorption spectrometry GB/T 4324.2-2023 Methods for chemical analysis of tungsten—Part 2:Determination of bismuth and arsenic contents GB/T 4324.2-1984 Methods for chemical analysis of tungsten--The potassium iodide-brucine photometric method for thedetermination of bismuth content GB/T 4324.3-2012 Methods for chemical analysis of tungsten—Part 3:Determination of tin content—Hydrogenate atomic absorption spectrometry GB/T 4324.3-1984 Methods forchemical analysis of tungsten--The polyethylene glycol octyl phenylether-phenylfluorone photometric method for the determination of tin content GB/T 4324.4-2012 Methods for chemical analysis of tungsten—Part 4:Determination of antimony content—Hydrogenate atomic absorption spectrometry GB/T 4324.4-1984 Methods for chemical analysis of tungsten--The malachite green photometric method for the determination of antimony content GB/T 4324.5-2012 Methods for chemical analysis of tungsten—Part 5:Determination of arsenic content—Hydrogenate atomic absorption spectrometry GB/T 4324.5-1984 Methods for chemical analysis of tungsten--The molybdenum blue photometric method for the determination of arsenic content GB/T 4324.6-2012 Methods for chemical analysis of tungsten—Part 6:Determination of iron content—1,10-phenanthroline spectrophotometry GB/T 4324.6-1984 Methods for chemical analysisof tungsten--The ortho-phenanthroline photometric method for the determination iron content GB/T 4324.7-2012 Methods for chemical analysis of tungsten—Part 7:Determination of cobalt content—Inductively coupled plasma atomic emission spectrometry GB/T 4324.7-1984 Methods for chemical analysis of tungsten--The 5-Cl-PADAB photometric method for the determination of cobalt content GB/T 4324.8-2008 Methods for chemical analysis of tungsten—Determination of nickel content—The inductively coupled plasma atomic emission spectrometry、flame atomic absorption spectrometry and dimethylglyoxime gravimetry GB/T 4324.9-2012 Methods for chemical analysis of tungsten—Part 9:Determination of cadmium content—Inductively-coupled plasma atomic emission spectrometry and flame atomic absorption spectrometry GB/T 4324.10-2012 Methods for chemical analysis of tungsten—Part 10:Determination of copper content—Flame atomic absorption spectrometry GB/T 4324.10-1984 Methods for chemical analysis of tungsten--The neocuproine photometric method for the determination of copper content GB/T 4324.11-2012 Methods for chemical analysis of tungsten—Part 11:Determination of aluminum content—Inductively coupled plasma atomic emission spectrometry GB/T 4324.11-1984 Methods for chemical analysis oftungsten--The chromazurol S photometric method for the determination of aluminium content GB/T 4324.12-2012 Methods for chemical analysis of tungsten—Part 12:Determination of silicon content—Chlorization-molybdenum blue spectrophotometry GB/T 4324.12-1984 Methods for chemical analysisof tungsten--The chlorization-molybdenum blue photometric method for the determination of silicon content GB/T 4324.13-2008 Methods for chemical analysis of tungsten—Determination of calcium content—The inductively coupled plasma atomic emission spectrometry GB/T 4324.14-2012 Methods for chemical analysis of tungsten—Part 14:Determination of residue content after chloride volatility—Gravimetric method GB/T 4324.15-2008 Methods for chemical analysis of tungsten—Determination of magnesium content—The flame atomic absorption spectrometry and inductively coupled plasma atomic emission spectrometry GB/T 4324.16-2012 Methods for chemical analysis of tungsten—Part 16:Determination of loss content on ignition—Gravimetric method GB/T 4324.17-2012 Methods for chemical analysis of tungsten—Part 17:Determination of sodium content—Flame atomic absorption spectrometry GB/T 4324.17-1984 Methods for chemical analysis of tungsten--The atomic absorption spectrophotometric method for the determination of sodium content GB/T 4324.18-2012 Methods for chemical analysis of tungsten—Part 18:Determination of potassium content—Flame atomic absorption spectrometry GB/T 4324.18-1984 Methods for chemical analysis of tungsten--The atomic absorption spectrophotometric method for the determination of potassium content GB/T 4324.19-2012 Methods for chemical analysis of tungsten—Part 19:Determination of titanium content—The diantipyrylmethane photometric spectrophtometry GB/T 4324.19-1984 Methods for chemical analysis of tungsten--The diantipyrylmethane photometric method for the determination of titanium content GB/T 4324.20-2012 Methods for chemical analysis of tungsten—Part 20:Determination of vanadium content—Inductively coupled plasma atomic emission spectrometry GB/T 4324.20-1984 Methods for chemical analysis of tungsten—The N-benzoyl-N-phenylhydroxylamine photometric method for the determination of vanadium content GB/T 4324.21-2012 Methods for chemical analysis of tungsten—Part 21:Determination of chromium content—Inductively coupled plasma atomic emission spectrometry GB/T 4324.21-1984 Methods for chemical analysis of tungsten--The diphenylcarbazide photometric method for the determination of chromium content GB/T 4324.22-2012 Methods for chemical analysis of tungsten—Part 22:Determination of manganese content—Inductively coupled plasma atomic emission spectrometry GB/T 4324.22-1984 Methods for chemical analysisof tungsten--The formaldoxime photometric method for manganese content GB/T 4324.23-2012 Methods for chemical analysis of tungsten—Part 23:Determination of sulfur content—The combustion-conductometric titration and high frequency combustion-infrared absorption method GB/T 4324.23-1984 Methods for chemical analysis of tungsten--The combustion-conductometric titration method for the determination of suphur content GB/T 4324.24-2012 Methods for chemical analysis of tungsten—Part 24:Determination of phosphorus content—Molybdemum blue photometry GB/T 4324.24-1984 Methods for chemical analysis of tungsten--The berylium as carrier precipitation agent-molybdenum blue photometric method for the determination of phosphorus content GB/T 4324.25-2012 Methods for chemical analysis of tungsten—Part 25:Determination of oxygen content—Pulse heating inert gas fusion-infrared absorption method GB/T 4324.25-1984 Methods for chemical analysis of tungsten--The inert gas fusion-coulometric titration method for the determination of oxygen content GB/T 4324.26-2012 Methods for chemical analysis of tungsten—Part 26:Determination of nitrogen content—Pulse heating inert gas fusion-thermal conductive method and the Nessler reagent spectrophotometry GB/T 4324.26-1984 Methods for chemical analysis of tungsten--The Nessler reagent photometric method for the determination of nitrogen content GB/T 4324.27-2012 Methods for chemical analysis of tungsten—Part 27:Determination of carbon content—High frequency combustion-infrared absorption method GB/T 4324.27-1984 Methods for chemical analysisof tungsten--The combustion-coulometric titration method for the determinationof carbon content GB/T 4324.28-2012 Methods for chemical analysis of tungsten—Part 28:Determination of molybdenum content—The thioyanate spectrophotometry GB/T 4324.28-1984 Methods for chemical analysis of tungsten--The thiocy anate photometric method for the determin-ation of molybdenum content GB/T 4324.29-1984 Methods for chemical analysis of tungsten--The gravimetric method for the determination of residue content after chloride volatility GB/T 4324.30-1984 Methods for chemical analysis of tungsten--The gravimetric method for the determination of loss content on ignition GB/T 8170-1987 Rules for rounding off of numberical values GB/T 8170-2008 Rules of rounding off for numerical values & expression and judgement of limiting values