1)Grade: Q195-Q235, HPB300, SS330-SS490, A36, SAE1015-1020, S235JR, S275JR, ST37-2,etc
2)Sizes: 15-150mm
3)Length: 6-12m

The differences between steel round bar and other reinforcing bars are as follows:

1)The steel round bar is round in appearance, without lines and ribs, and other reinforcing bars have engraved lines or ribs on their surface, which results in small adhesion between steel round bar and concrete, while other reinforcing bars have large adhesion with concrete.

2)The composition is different. steel round bar (grade I steel) belongs to ordinary low carbon steel, while other steel bars are mostly alloy steel. 3. The strength is different. steel round bar has low strength, while other steels have high strength, that is, steel round bar with the same diameter can bear less tensile force than other steel bars, but its plasticity is stronger than other steel bars, that is, steel round bar has larger deformation before being pulled off, while other steel bars have much smaller deformation before being pulled off.

Steel round bar are widely used in making all kinds of tools, cutting tools, dies and measuring tools, parts of machinery manufacturing industry. For Example, 40Mn2 grade steel round bar is generally used in quenched and tempered condition, it can be used to manufacture parts working under heavy load, such as shaft, crankshaft, axle, piston rod, worm, lever, connecting rod, loaded bolt, screw, reinforcing ring, spring and other quenched and tempered parts.