This standard specifies the order content, classification and code, size, shape, weight and allowable deviation, technical requirements, and test methods of stainless steel cold-worked steel bars (generally referred to as round steel, square steel, hexagonal steel and flat steel, hereinafter referred to as steel bars). , inspection rules, packaging, signs and quality certificates, etc. This standard applies to cold-rolled or cold-drawn round steel, square steel, hexagonal steel, flat steel and silver bright round steel (peeled, grinding and polishing).
GB/T 1979 Standard diagrams for macrostructure and defect of structural steels
GB/T 2101 General requirment of acceptance, packaging, marking and certification for section steel*, 2017-07-31 Update
GB/T 223.67 Iron,steel and alloy.Determination of sulfur content.Methylene blue spectrophotometric method
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 223.71 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 Iron,steel and alloy.Determination of sulfur content.Gravimetric method
GB/T 226 Test method for macrostructure and defect of steel by etching*, 2015-09-11 Update
GB/T 228 Metallic materials--Tensile testing at ambient temperature
GB/T 229 Metallic materials—Charpy pendulum impact test method*, 2020-09-29 Update
GB/T 4334 Corrosion of metals and alloys-Test methods for intergranular corrosion of austenitic and ferritic-austenitic (duplex) stainless steels*, 2020-04-28 Update