GB/T 23520-2022 Platinum clad anode sheet and plate for cathodic protection

GB/T 23520-2009 Platinum/niobium clad anode strip for Cathodic Protection

GB/T 1419-1989 Sponge platinum GB/T 1419-2004 Sponge platinum GB/T 1419-2015 Sponge platinum GB/T 3620.1-1994 Designation and composition of titanium and titanium alloys GB/T 3620.1-2007 Designation and composition of titanium and titanium alloys GB/T 3620.1-2016 Designation and composition of titanium and titanium alloys GB/T 4698.1-1996 Sponge titanium, titanium and titanium alloys—Determination of copper content—Diethyldithiocarbamate spectrophotometric method GB/T 4698.1-2017 Methods for chemical analysis of titanium sponge, titanium and titanium alloys—Part 1:Determination of copper content—Flame atomic absorption spectrometry GB/T 4698.2-1996 Sponge titanium, titanium and titanium alloys—Determination of iron content—1,10-Phenanthroline spectrophotometric method GB/T 4698.2-2011 Methods for chemical analysis of titanium sponge,titanium and titanium alloys—Determination of iron content GB/T 4698.3-1996 Sponge titanium, titanium and titanium alloys—Determination of silicon content—Molybdenum blue spectrophotometric method GB/T 4698.3-2017 Methods for chemical analysis of titanium sponge, titanium and titanium alloys—Part 3:Determination of silicon content—Molybdenum blue spectrophotometry GB/T 4698.4-1996 Sponge titanium, titanium and titanium alloys—Determination of manganese content—Potassium periodate spectrophotometric method GB/T 4698.4-2017 Methods for chemical analysis of titanium sponge,titanium and titanium alloys—Part 4:Determination of manganese content—Potassium periodate spectrophotometry and inductively coupled plasma atomic emission spectrometry GB/T 4698.5-1996 Sponge titanium, titanium and titanium alloys—Determination of molybdenum content—Thiocyanate spectrophotometric method GB/T 4698.5-2017 Methods for chemical analysis of titanium sponge, titanium and titanium alloys—Part 5:Determination of molybdenum content—Thiocyanate spectrophotometry and inductively coupled plasma atomic emission spectrometry GB/T 4698.6-1996 Sponge titanium, titanium and titanium alloys—Determination of boron content—Extraction—methylene blue spectrophotometric method GB/T 4698.6-2019 Methods for chemical analysis of titanium sponge,titanium and titanium alloys—Part 6:Determination of boron content—Methylene blue spectrophotometry and inductively coupled plasma atomic emission spectrometry GB/T 4698.7-1996 Sponge titanium, titanium and titanium alloys—Determination of nitrogen content—Distillation—Nessler reagent spectrophotometric method GB/T 4698.7-2011 Methods for chemical analysis of titanium sponge,titanium and titanium alloys—Determination of oxygen and nitrogen content GB/T 4698.8-1996 Sponge titanium, titanium and titanium alloys—Determination of aluminum content—Separation with sodium hydroxide-EDTA complexometric titration method GB/T 4698.8-2017 Methods for chemical analysis of titanium sponge,titanium and titanium alloys—Part 8:Determination of aluminum content—Separation with sodium hydroxide-EDTA complex-metric titration and inductively coupled plasma atomic emission spectrometry GB/T 4698.9-1996 Sponge titanium, titanium and titanium alloys—Determination of tin content—Potassium iodate titration method GB/T 4698.9-2017 Methods for chemical analysis of titanium sponge,titanium and titanium alloys—Part 9:Determination of tin content— Potassium iodate titration and inductively coupled plasma atomic emission spectrometry GB/T 4698.10-1996 Sponge titanium, titanium and titanium alloys—Determination of chromium content in the presence of Vanadium—Ammonium ferrous sulfate titration method GB/T 4698.10-2020 Methods for chemical analysis of titanium sponge,titanium and titanium alloys—Part 10:Determination of chromium content—Ammonium ferrous sulfate titration and inductively coupled plasma atomic emission spectrometry(with vanadium) GB/T 4698.11-1996 Sponge titanium, titanium and titanium alloys—Determination of chromium content in the absence of Vanadium—Ammonium ferrous sulfate titration method GB/T 4698.12-1996 Sponge titanium, titanium and titanium alloys—Determination of vanadium content—Ammonium ferrous sulfate titration method GB/T 4698.12-2017 Methods for chemical analysis of titanium sponge,titanium and titanium alloys—Part 12:Determination of vanadium content—Ammonium ferrous sulfate titration and inductively coupled plasma atomic emission spectrometry GB/T 4698.13-1996 Sponge titanium, titanium and titanium alloys—Determination of zirconium content—EDTA complexometric titration method GB/T 4698.13-2017 Methods for chemical analysis of titanium sponge,titanium and titanium alloys—Part 13:Determination of zirconium content—EDTA complexometric titration and inductively coupled plasma atomic emission spectrometry GB/T 4698.14-1996 Sponge titanium, titanium and titanium alloys—Determination of carbon content—Combustion coulometric method GB/T 4698.14-2011 Methods for chemical analysis of titanium sponge,titanium and titanium alloys—Determination of carbon content GB/T 4698.15-1996 Sponge titanium, titanium and titanium alloys—Determination of hydrogen content—Vacuum heating gas chromatographic method GB/T 4698.15-2011 Methods for chemical analysis of titanium sponge,titanium and titanium alloys—Determination of hydrogen content GB/T 4698.16-1996 Sponge titanium, titanium and titanium alloys—Determination of oxygen content—Inert gas fusion coulometric method GB/T 4698.17-1996 Sponge titanium, titanium and titanium alloys—Determination of magnesium content—Flame atomic absorption spectrometric method GB/T 4698.17-2019 Methods for chemical analysis of titanium sponge,titanium and titanium alloys—Part 17:Determination of magnesium content—Flame atomic absorption spectrometry GB/T 4698.18-1996 Sponge titanium, titanium and titanium alloys—Determination of tin content—Flame atomic absorption spectrometric method GB/T 4698.18-2017 Methods for chemical analysis of titanium sponge, titanium and titanium alloys—Part 18:Determination of tin content—Flame atomic absorption spectrometry GB/T 4698.19-1996 Sponge titanium, titanium and titanium alloys—Determination of molybdenum content—Thiocyanate differential spectrophotometric method GB/T 4698.19-2017 Methods for chemical analysis of titanium sponge,titanium and titanium alloys—Part 19:Determination of molybdenum content—Thiocyanate-differential spectrophotometry GB/T 4698.20-1996 Sponge titanium, titanium and titanium alloys—Determination of manganese content—Potassium periodate spectrophotometric method GB/T 4698.21-1996 Sponge titanium, titanium and titanium alloys—Determination of manganese, chromium, nickel, aluminum, molybdenum, tin, vanadium, yttrium, copper, zirconium content—Emission spectrographic method GB/T 4698.21-2019 Methods for chemical analysis of titanium sponge,titanium and titanium alloys—Part 21:Determination of manganese,chromium,nickel,aluminum,molybdenum,tin,vanadium,yttrium,copper and zirconium content—Atomic emission spectrometry GB/T 4698.22-1996 Sponge titanium, titanium and titanium alloys—Determination of niobium content—2-(5-Bromo-2-pyridylazo)-5-Diethylaminophenol spectrophotometric method GB/T 4698.22-2017 Methods for chemical analysis of titanium sponge,titanium and titanium alloys—Part 22:Determination of niobium content—5-Br-PADAP spectrophotometry and inductively coupled plasma atomic emission spectrometry GB/T 4698.23-1996 Sponge titanium, titanium and titanium alloys—Determination of palladium content—Stannous choride—Potassium iodide spectrophotometric method GB/T 4698.23-2017 Methods for chemical analysis of titanium sponge，titanium and titanium alloys—Part 23:Determination of palladium content—Stannous choride-potassium iodide spectrophotometry and inductively coupled plasma atomic emission spectrometry GB/T 4698.24-1996 Sponge titanium, titanium and titanium alloys—Determination of nickel content—Dimethylglyoxime spectrophotometric method GB/T 4698.24-2017 Methods for chemical analysis of titanium sponge, titanium and titanium alloys—Part 24:Determination of nickel content—Dimethylglyoxime spectrophotometry and inductively coupled plasma atomic emission spectrometry GB/T 4698.25-1996 Sponge titanium, titanium and titanium alloys—Determination chlorine content—Silver sulfide spectrophotometric method GB/T 4698.25-2017 Methods for chemical analysis of titanium sponge,titanium and titanium alloys—Part 25:Determination of chlorine content—Silver chlorin spectrophotometry GB/T 4698.26-2024 Methods for chemical analysis of titanium sponge,titanium and titanium alloys—Part 26:Determination of tantalum and tungsten content—Inductively coupled plasma atomic emission spectrometry GB/T 4698.27-2017 Methods for chemical analysis of titanium sponge,titanium and titanium alloys—Part 27:Determination of neodymium content—Inductively coupled plasma atomic emission spectrometry GB/T 4698.28-2017 Methods for chemical analysis of titanium sponge, titanium and titanium alloys—Part 28: Determination of ruthenium content—Inductively coupled plasma atomic emission spectrometry GB/T 4698.29-2024 Methods for chemical analysis of titanium sponge,titanium and titanium alloys—Part 29:Determination of aluminum,carbon,chromium,copper,iron,manganese,molybdenum,nickel,silicon,tin,vanadium and zirconium contents—Spark atomic emission spectrometry GB/T 6462-1986 Metallic and oxide coatings—Measurement of coating thickness—Microscopical method GB/T 6462-2005 Metallic and oxide coatings—Measurement of coating thickness—Microscopical method GB/T 6462-2025 Metallic and oxide coatings—Measurement of coating thinckness—Microscopical method GB/T 6896-1998 Niobium bars GB/T 6896-2007 Niobium bars 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 GB/T 15076.10-1994 Methods for chemical analysis of tantalum and niobium—Determination of iron, nickel, chromium, titanium, zirconium, aluminum and manganese contents in niobium GB/T 15076.11-1994 Methods for chemical analysis of tantalum and niobium—Determination of arsenic antimony、lead、tinand bismuth contents in niobium GB/T 15076.1-1994 Methods for chemical analysis of tantalum and niobium—Determination of tantalum content in niobium GB/T 15076.12-1994 Methods for chemical analysis of tantalum and niobium—Determination of carbon content GB/T 15076.13-1994 Methods for chemical analysis of tantalum and niobium—Determination of nitrogen content in tantalum GB/T 15076.14-1994 Methods for chemical analysis of tantalum and niobium—Determination of oxygen content GB/T 15076.15-1994 Methods for chemical analysis of tantalum and niobium—Determination of hydrogen content GB/T 15076.2-1994 Methods for chemical analysis of tantalum and niobium—Determination of niobium content in tantalum GB/T 15076.3-1994 Methods for chemical analysis of tantalum and niobium—Determination of copper content GB/T 15076.4-1994 Methods for chemical analysis of tantalum and niobium—Determination of iron content GB/T 15076.5-1994 Methods for chemical analysis of tantalum and niobium—Determination of molybdenum and tungsten contents GB/T 15076.6-1994 Methods for chemical analysis of tantalum and niobium—Determination of silicon content in tantalum GB/T 15076.7-1994 Methods for chemical analysis of tantalum and niobium—Determination of phospherus content in niobium GB/T 15076.8-1994 Methods for chemical analysis of tantalum and niobium—Determination of sulphur content in niobium GB/T 15076.9-1994 Methods for chemical analysis of tantalum and niobium—Determination of iron, chromium, nickel, manganese, titanium, aluminum, copper and zirconium contents in tantalum GB/T 15076.12-2008 Methods for chemical analysis of tantalum and niobium—Determination of phosphorus content in tantalum GB/T 15076.14-2008 Methods for chemical analysis of tantalum and niobium—Determination of oxygen content GB/T 15076.15-2008 Methods for chemical analysis of tantalum and niobium—Determination of hydrogen content GB/T 15076.16-2008 Methods for chemical analysis of tantalum and niobium—Determination of sodium and potassium contents GB/T 15076.8-2008 Methods for chemical analysis of tantalum and niobium—Determination of carbon and sulphur contents GB/T 15076.9-2008 Methods for chemical analysis of tantalum and niobium—Determination of iron,chromium,nickel,manganese,titanium,aluminum,copper,tin,lead and zirconium contents in tantalum GB/T 15076.1-2017 Methods for chemical analysis of tantalum and niobium—Part 1:Determination of tantalum content in niobium—Inductively coupled plasma atomic emission spectrometry GB/T 15076.13-2017 Methods for chemical analysis of tantalum and niobium—Part 13:Determination of nitrogen content—Inert gas fusion thermal conductivity method GB/T 15076.5-2017 Methods for chemical analysis of tantalum and niobium—Part 5:Determination of molybdenum and tungsten contents—Inductively coupled plasma atomic emission spectrometry GB/T 15076.3-2019 Methods for chemical analysis of tantalum and niobium—Part 3:Determination of copper content—Flame atomic absorption spectrometry GB/T 15076.10-2019 Methods for chemical analysis of tantalum and niobium—Part 10:Determination of iron,nickel,chromium,titanium,zirconium,aluminum and manganese contents in niobium—Direct current arc atomic emission spectrometry GB/T 15076.2-2019 Methods for chemical analysis of tantalum and niobium—Part 2:Determination of niobium content in tantalum—Inductively coupled plasma atomic emission spectrometry and stratography gravimetry GB/T 15076.11-2020 Methods for chemical analysis of tantalum and niobium—Part 11:Determination of arsenic,antimony,lead,tin and bismuth contents in niobium—Direct current arc atomic emission spectrometry GB/T 15076.4-2020 Methods for chemical analysis of tantalum and niobium—Part 4:Determination of iron content—1,10-Phenanthroline spectrophotometry GB/T 15076.6-2020 Methods for chemical analysis of tantalum and niobium—Part 6:Determination of silicon content—Inductively coupled plasma atomic emission spectrometry GB/T 15076.7-2020 Methods for chemical analysis of tantalum and niobium—Part 7:Determination of phospherus content in niobium—4-Formyloxy-pentyl ketone-[2]extraction separation phosphomolybdate blue spectrophotometry and inductively coupled plasma atomic emission spectrometry GB/T 15077-1994 Geometric size measuring methods of precious metals and their alloy materials GB/T 15077-2008 Geometric size measuring methods of precious metals and their alloy materials