Round bar refers to one of solid steel materials with the circular cross-section. Its specifications expressed in diameter. We can provide ASTM/AISI standard alloy round bar, EN/DIN standard alloy round bar and GB standard alloy round bar. They are different from other steel material.
First of all, shape is not the same, the shape of round bar is light and round, its surface is soomth, but other steel surface has a sculptured appearance. Then the ingredients are not the same, round bar belongs to the ordinary low-carbon steel, other steel mostly is alloy steel. Finally, intensity is not the same, the intensity of round bar is low, other steel has high strength.