The main models of round steel include:
1. Q235B round steel: a kind of low carbon structural steel, suitable for manufacturing bearings, couplings, gears, etc.
2. 45# round steel: a type of carbon structural steel with high hardness and strength, suitable for manufacturing machine tool parts, molds and tools.
3. 40Cr round steel: an alloy structural steel with good heat resistance, wear resistance and high-strength creep resistance. It is suitable for manufacturing high-strength bolts, bearings, axle shafts, etc.
4. 20# round steel: a type of carbon structural steel with a hardness slightly lower than 45# but good wear resistance and toughness. It is suitable for manufacturing machine tools, automobiles, tractors and other parts.
5. 16Mn round steel: a low-alloy structural steel with high strength and hardness, suitable for manufacturing construction and mechanical structural parts.
6. 35CrMo round steel: an alloy structural steel with good strength, hardness and toughness, suitable for manufacturing high-strength hinge shafts, half shafts, rocker arms, etc.
7. 42CrMo round steel: an alloy structural steel with extremely high strength and toughness, suitable for manufacturing high-strength parts such as hydraulic machinery, heavy-duty machinery, and automobile wheels.
