GB/T 2520-2000 Cold-reduced electrolytic tinplate

GB 2520-1988

GB/T 2520-2008 Cold-reduced electrolytic tinplate

GB/T 222-1984 Method of sampling steel for determination of chemical composition and permissible variations for product analysis GB/T 223.3-1988 Methods for chemical analysis of iron, steel and alloy—The diantipyryl methane phosphomolybdate gravimetric method for the determination of phosphorus content GB/T 223.5-1997 Methods for chemical analysis of iron,steel and alloy—The reduced molybdosilicate spectro photometric method for the determination of acid-soluble silicon content GB/T 223.12-1991 Methods for chemical analysis of iron, steel and alloy—The sodium carbonate separation-diphenyl carbazide photometric method for the determination of chromium content GB/T 223.18-1994 Methods for chemical analysis of iron, steel and alloy The sodium thiosulfate separation iodimetric method for the determination of cupper content GB/T 223.19-1989 Methods for chemical analysis of iron, steel and alloy The neocuproine-chloroform extraction photometric method for the determination of copper content GB/T 223.23-1994 Methods for chemical analysis of iron, steel and alloy—The dimethylglyoxime spectrophotometric method for the determination of nickel content GB/T 223.24-1994 Methods for chemical analysis of iron, steel and alloy The extraction separation—The dimethylglyoxime spectrophotometric method for the determination of nickel content GB/T 223.27-1994 Methods for chemical analysis of iron, steel and alloy The thiocyanate-butyl acetate extraction spectrophotometric method for the determination of molybdenum content GB/T 223.54-1987 Methods for chemical analysis of iron,steel and alloy—The flame atomic absorption spectrophotometric method for the determination of nickel content GB/T 223.58-1987 Methods for chemical analysis of iron，steel and alloy--The extraction-absorption catalytic polarographic method for the determination of manganese content GB/T 223.59-1987 GB/T 223.61-1988 Methods for chemical analysis of iron,steel and alloy—The ammonium phosphomolybdate volumetric method for the determination of phosphorus content GB/T 223.62-1988 Methods for chemical analysis of iron,steel and alloy—The butyl acetate extraction photometric method for the determination of phosphorus content GB/T 223.63-1988 Methods for chemical analysis of iron,steel and alloy—The sodium(potassium)periodate photometric method for the determination of manganese content GB/T 223.64-1988 Methods for chemical analysis of iron,steel and alloy—The flame atomic absorption spectrometric method forthe determination of manganese content GB/T 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 GB/T 223.68-1997 Methods for chemical analysis of iron,steel and alloy The potassium iodate titration method after combustion in the pipe furnace for the determination of sulfur content GB/T 223.69-1997 Methods for chemical analysis of iron,steel and alloy The gas- volumetric method after combustion in the pipe furnace for the determination of carbon content GB/T 223.71-1997 Methods for chemical analysis of iron,steel and alloy—The gravimetric method after combustion in the pipe furnace for the determination of carbon content GB/T 223.72-1991 Methods for chemical analysis of iron, steel and alloy—The alumina chromatographic separation-barium sulfate gravimetric method for the determination of sulphur content GB/T 223.74-1997 Methods for chemical analysis of iron,steel and alloy—The combustion gravimetric/gas-volumetric method for the determination of combined carbon content GB/T 247-1997 General rule of acceptance, package, mark and certification for steel plates(sheets) and strips GB/T 1818-1994 Metallic materials—Rockwell superficial hardness test GB/T 1838-1995 Tin coated sheet(strip)—Tin coating mass testing method GB/T 3076-1982 GB/T 3260.1-1982 GB/T 3260.2-1982 GB/T 3260.3-1982 GB/T 3260.4-1982 GB/T

ISO 11949:1995