Q195 Q235 40CR Hot rolled round steel for machine parts

Round steel is a long, solid steel bar with a circular cross-section. Round steel is classified as hot rolled, forged and cold drawn. Hot rolled round steel is 5.5-250 mm in size. Among them :5.5-25 mm small round steel mostly to straight strips into bundles of supply, commonly used for reinforcing bars, bolts and various mechanical parts; Round steel larger than 25 mm, mainly used in the manufacture of machine parts, seamless steel pipe billet, etc. Carbon steel can be divided into low carbon steel, medium carbon steel and high carbon steel according to its chemical composition (i.e. carbon content). According to the quality of steel can be divided into ordinary carbon steel and high quality carbon steel. According to the use can be divided into carbon structural steel, carbon tool steel. Round steel material :Q195, Q235, 10#, 20#, 35#, 45#, Q215, Q235, Q345, 12Cr1Mov, 15CrMo, 304, 316, 20Cr, 40Cr, 20CrMo, 35CrMo, 42CrMo, 40CrNiMo, GCr15, 65M n, 50Mn, 50Cr, 3Cr2W8V, 20CrMnTi, 5CrMnMo, etc.