1. Subject content and application scopeThe code prescribed the technical conditions of carbon structure steel. The standard is suitable for general structural steel and hot-rolled steel plates, steel strip, formed steel and bar steel for works. The product can be used for weld, binding and bolting member. They are generally used under supply state. The chemical compositions prescribed in the standard is suitable for steel ingot (including continuous casting blank), steel billet and its products.
2. Cited standard
GB 222 Method of sampling steel for determination of chemical composition and permissible variations for product analysis.
GB 223 Method of chemical analysis on steel and alloy
GB 228 Metallic materials-tensile testing
GB 232 Metallic materials-bend testingGB 247 General rule of acceptance, package, mark and certification for steel plates (sheets) and strips
GB 2101 General rule of acceptance, package, mark and certification for profile steel
GB 2106 Metallic materials; Charpy impact test (V-notch)
GB 2975 Rules for sampling in mechanical and technological testing of steel products
GB 4159 Metallic materials; Charpy impact test at low temperature
GB 6397 Metallic materials-test pieces for tensile testing3. The denotation of number, code name and symbol
2. Cited standard
GB 222 Method of sampling steel for determination of chemical composition and permissible variations for product analysis.
GB 223 Method of chemical analysis on steel and alloy
GB 228 Metallic materials-tensile testing
GB 232 Metallic materials-bend testingGB 247 General rule of acceptance, package, mark and certification for steel plates (sheets) and strips
GB 2101 General rule of acceptance, package, mark and certification for profile steel
GB 2106 Metallic materials; Charpy impact test (V-notch)
GB 2975 Rules for sampling in mechanical and technological testing of steel products
GB 4159 Metallic materials; Charpy impact test at low temperature
GB 6397 Metallic materials-test pieces for tensile testing3. The denotation of number, code name and symbol
