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Round steel and other differences between the steel: 

1、appearance is not the same, round steel shape round, no ribs without ribs, other steel surface appearance of a carved or ribs, which resulted in round steel and concrete cohesive force small , While the other reinforced concrete and concrete cohesive force. 

2、ingredients are not the same, round steel (a steel) are ordinary low carbon steel, other steel bars for the alloy steel.

3、strength is not the same, round steel low strength, other high strength steel, that is, the same size of the same bar and other steel bars, round steel can withstand the tension than other steel, but the steel than the other reinforced , That is, round bar before being pulled off a larger deformation, and other steel bars before being pulled off the deformation is much smaller.