This standard specifies dimension, shape, weight and permissible deviation, steel designation expression methods, technical requirements, inspection method, inspection rules, packaging, marking and certification of atmospheric corrosion resisting steel for railway rolling stock.
This standard is applicable to hot-rolled and cold-rolled steel plates, steel strips and profile steels made of atmospheric corrosion resisting steel for railway rolling stock.
2 Normative References
The following documents for the application of this document are essential. Any dated reference, just dated edition applies to this document. For undated references, the latest edition (including any amendments) applies to this document.
GB/T 222 Permissible Tolerances for Chemical Composition of Steel Products
GB/T 223 Methods for Chemical Analysis of Iron, Steel and Alloy
GB/T 228.1 Metallic Materials - Tensile Testing - Part 1: Method of Test at Room Temperature
GB/T 229 Metallic Materials - Charpy pendulum Impact Test Method
GB/T 232 Metallic Materials - Bend Test
GB/T 247 General Rule of Package Mark and Certification for Steel Plates (Sheets) and Strips
GB/T 706 Hot Rolled Section Steel
GB/T 708 Dimension Shape Weight and Tolerance for Cold-rolled Steel Plates and Sheets
GB/T 709 Dimensions, Shape, Weight and Tolerances for Hot-rolled Plates and Sheets
GB/T 2101 General Requirement of Acceptance Packaging Marking and Certification for Section Steel
GB/T 2975 Steel and Steel Products - Location and Preparation of Test Pieces for Mechanical Testing
GB/T 4336 Standard Test Method for Spark Discharge Atomic Emission Spectrometric Analysis of Carbon and Low-alloy Steel (Routine Method)
GB/T 6394 Metal - Methods for Estimating the Average Grain Size
GB/T 10561 Steel - Determination of Content of Nonmetallic Inclusions - Micrographic Method Using Standards Diagrams
GB/T 17505 Steel and Steel Products - General Technical Delivery Requirements
GB/T 20066 Steel and Iron - Sampling and Preparation of Samples for the Determination of Chemical Composition
GB/T 20125 Low-alloy Steel - Determination of Multi-element Contents - Inductively Coupled Plasma Atomic Emission Spectrometric Method
TB/T 2375 Testing Method for Cycle Infiltration and Corrosion of Railway Weather-resistance Steel
3 Dimension, Shape, Weight as well as Their Permissible Deviation
3.1 The dimension, shape, weight and permissible deviation of steel sheet and strip shall meet those specified in GB/T 709 and GB/T 708.
3.2 The dimension，shape，weight and permissible deviation of hot-rolled profile steel shall meet those specified in GB/T 706; dimension, shape and permissible deviation of cold formed profile steel shall meet the requirements for corresponding products.
