GB/T 223.3 "Methods for Chemical Analysis of Iron, Steel and Alloy-The Diantipyrylmethane Phosphomolybdate Gravimetric Method for the Determination of Phosphorus Content"
GB/T 223.16 "Methods for Chemical Analysis of Iron, Steel and Alloy-The Chromotropic Acid Photometric Method for the Determination of Titanium Content"
GB/T 223.29 "Methods for Chemical Analysis of Iron, Steel and Alloy-The Xylenol Orange Photometric Method for Determination of Lead Content after Carrier Precipitation"
GB/T 223.31 "Methods for Chemical Analysis of Iron, Steel and Alloy-The Distillation-Molybdenum Blue Spectrophotometric Method for the Determination of Arsenic Content"
GB/T 223.32 "Methods for Chemical Analysis of Iron, Steel and Alloy-The Hypophosphite Reduction-Iodimetric Method for the Determination of Arsenic Content"
GB/T 223.47 "Methods for Chemical Analysis of Iron, Steel and Alloy-The Carrier Precipitation-Molybdenum Blue Potometric Method for the Determination of Antimony Content"
GB/T 223.48 "Methods for Chemical Analysis of Iron, Steel and Alloy-The Semixylenol Orange Photometric Method for the Determination of Bismuth Content"
GB/T 223.58 "Methods for Chemical Analysis of Iron, Steel and Alloy-The Sodium Arsenite-Sodium Nitrite Titrimetric Method for the Determination of Manganese Content"
GB/T 223.60 "Methods for Chemical Analysis of Iron, Steel and Alloy-The Perchloric Acid Dehydration Gravimetric Method for the Determination of Silicon Content"
GB/T 223.61 "Methods for Chemical Analysis of Iron, Steel and Alloy-The Ammonium Phosphomolybdate Volumetric Method for the Determination of Phosphorus Content"
GB/T 223.62 "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 "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 "Methods for Chemical Analysis of Iron, Steel and Alloy-The Flame Atomic Absorption Spectrometric Method for the Determination of Manganese Content"
GB/T 223.67 "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 "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 223.71 "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 "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 719 "Pig Iron-Sampling for Chemical Analysis"
YB/T 081 "Rule for Rounding Off of Numerical Values and Judgement of Testing Values for Technical Standards of Metallurgy"
ISO 4935 "Steel and Iron-Determination of Sulfur Content-Infrared Absorption Method after Combustion in an Induction Furnace"
ISO 9596 "Steel and Iron-Determination of Total Carbon Content-Infrared Absorption Method after Combustion in an Induction Furnace"