This standard specifies the designation method, ordering content, size, shape, weight, technical requirements, test methods, inspection rules, packaging, signs and quality certificates of low-alloy high-strength structural steels. This standard applies to low-alloy high-strength structural steel plates, steel strips, section steel, steel bars, etc. for general structures and engineering. Its chemical composition is also suitable for steel billets.
GB/T 14977 General requirement for surface condition of hot-rolled steel plates
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 20123 Steel and iron - Determination of total carbon and sulfur content Infrared absorption method after combustion in an induction furnace (routine method)
GB/T 20124 Steel and iron - Determination of nitrogen content - Thermal conductimetric method after fusion in a current of inert gas (Routine method)
GB/T 2101 General requirment of acceptance, packaging, marking and certification for section steel
GB/T 222 Permissible tolerances for chemical composition of steel products
GB/T 223.11 Determination of chromium content in iron, steel and alloy by visual titration or potentiometric titration
GB/T 223.14 Methods for chemical analysis of iron,steel and alloy The N-benzoy-N-phenylhydroxylamine extraction photometric method for the determination of vanadium content
GB/T 223.17 Methods for chemical analysis of iron,steel and alloy--The diantipyrylmethane photometric method for the determination of titanium content
GB/T 223.18 Methods for chemical analysis of iron steel and alloy.The sodium thiosulfate separation iodimetric method for the determination of cupper content
GB/T 223.23 Iron,,steel and alloy.Determination of nickel content.The dimethylglyoxime spectrophotometric method
GB/T 223.26 Iron,steel and alloy.Determination of molybdenum content.The thiocyanate spectrophotometric method
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 223.37 Iron, steel and alloy—Determination of nitrogen content—Indophenol blue spectrophotometric method after distillation separation*, 2020-06-02 Update
GB/T 223.40 Iron, steel and alloy Determination of niobium content by the sulphochlorophenol S spectrophotometric method
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 223.63 Iron, steel and alloy—Determination of manganese content—Sodium (potassium) periodate spectrophotometric method*, 2022-07-11 Update
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 223.69 Iron,steel and alloy.Determination of carbon contents.Gas-volumetric method after combustion in the pipe furnace
GB/T 223.76 Methods for chemical analysis iron,steel and alloy.The flame atomic absorption spertrometric method for the determination of vanadium content
GB/T 223.78 Methods for chemical analysis of iron,steel and alloy-Curcumin spectrophotometric method for the determination of boron content
GB/T 223.79 Iron and steel-Determination of multi-element contents-X-ray fluorescence spectrometry (Routine method)
GB/T 223.84 Steel and iron.Determination of titanium content.Diantipyrylmethane spectrophotometric method
GB/T 223.9 Iron,steel and alloy.Determination of aluminium content.Chrome azurol S photometric method
GB/T 228.1 Metallic materials—Tensile testing—Part 1: Method of test at room temperature*, 2021-12-31 Update
GB/T 229 Metallic materials—Charpy pendulum impact test method*, 2020-09-29 Update
GB/T 232 Metallic materials - Bend test methods*, 2024-03-15 Update
GB/T 247 General rule of package,mark and certification for steel plates(sheets)and strips
GB/T 28300 Surface quality classes for hot-rolled bars and rods technical delivery conditions
GB/T 2975-2018 Steel and steel products.Location and preparation of samples and test pieces for mechanical testing
GB/T 4336 Determination of multi-element content in carbon steel and medium and low alloy steel Spark discharge atomic emission spectrometry (conventional method) Amendment No. 1
GB/T 5313 Thickness direction performance steel plate*, 2023-09-07 Update
GB/T 702 Hot-rolled steel bars—Dimensions,shape,weight and tolerances