1.Round steel
2.Diameter: 250mm-800mm
3.Length: 6M
4.Forging materials
5.Quality,GB2 defectoscopy

structural alloy steel, used for mechanical parts and a variety of engineering components and contains one or more of a certain amount of alloy elements in steel
With proper hardenability, the appropriate metal after heat treatment, microstructure is homogeneous sorbite, bainite or fine pearlite, which has a high tensile strength and yield ratio (generally 0.85), higher toughness and fatigue strength, and lower the ductile - brittle transition temperature, can be used to make cross-section of a larger size machine parts