This standard specifies the type dimensions and permissible deviations, technical requirements, test methods, inspection rules, packaging, marking and quality certificate for rail joint bars.
This standard is applicable to joint bars for 43kg/m, 50kg/m, 60kg/m and 75kg/m rails.
2 Normative References
The following documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated reference, subsequent amendments to (excluding any corrigendum), or revisions of, any of these publications do not apply. However, parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. For any undated references, the latest edition of the document referred to applies.
GB/T 222-2006 Permissible Tolerances for Chemical Composition of Steel Products
GB/T 223.3-1998 Methods for Chemical Analysis of Iron, Steel and Alloy - The Diantipyrylmethane 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 Spectrophotometric Method for the Determination of Acid-soluble silicon Content
GB/T 223.11-1991 Methods for Chemical Analysis of Iron, Steel and Alloy - The Ammonium Persulfate Oxidation Volumetric Method for the Determination of Chromium 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 Iodometric Method for the Determination of Copper 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 223.53-1987 Methods for Chemical Analysis of Iron, Steel and Alloy - The Flame Atomic Absorption Spectrophotometric Method for the Determination of Copper Content
GB/T 223.58-1987 Methods for Chemical Analysis of Iron, Steel and alloy - The Sodium Arsenite-Sodium Nitrite Titrimetric Method for the Determination of Manganese Content
GB/T 223.59-1987 Methods for Chemical Analysis of Iron, Steel and Alloy - The Reduced Molybdoantimonyl Phosphoric Acid Photometric Method for the Determination of Phosphorus Content
GB/T 223.60-1997 Methods for Chemical Analysis of Iron, Steel and Alloy-The Perchloric Acid Dehydration Gravimetric Method for the Determination of Silicon Content
GB/T 223.61-1988 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 for the 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 22345-2008 The following standards are cited：
