Round steel refers to a solid long steel bar with a circular cross-section. Its specifications are expressed in millimeters of diameter. Round steel is divided into three types: hot-rolled, forged, and cold-drawn. The specifications of hot-rolled round steel are 5.5-250 mm. Among them: small round steel of 5.5-25 mm is mostly supplied in straight strips and bundles and is often used as steel bars. So, what is the difference between round steel and other steel bars?
1 Appearance
The appearance of round steel is smooth and round, with no lines or ribs. The surface of other steel bars has grooves or ribs. This results in a small bonding force between round steel and concrete, while the bonding force between other steel bars and concrete is large.
2 ingredients
Round steel (first-grade steel) is ordinary low-carbon steel, and other steel bars are mostly alloy steel.
3 intensity
The strength of round steel is low, while other steels have high strength. That is, compared with other steel bars, round steel with the same diameter can withstand less tensile force than other steel bars, but the plasticity of round steel is stronger than steel bars, that is, round steel has There is a large deformation before being pulled off, while the deformation of other steel bars before being pulled off is much smaller.

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