Round bar is divided into hot-rolled, forged and drawn three. Hot-rolled round the size of 5.5-250 mm. Where: 5.5-25 mm straight much of the little round bundles of supplies, often used as a reinforcement, bolts and various mechanical parts; greater than 25 mm round steel, mainly used in the manufacture of machinery parts, seamless steel tube and so on.

Round material: Q195, Q235, 10#, and 20#, and 35#, and 45#, Q215, Q235, Q345, 12Cr1Mov, 15CrMo, 304, 316, 20Cr, 40Cr, 20CrMo, 35CrMo, 42CrMo, 40CrNiMo, GCr15, 65Mn, 50Mn, 50Cr, 3Cr2W8V, 20CrMnTi, 5CrMnMo etc.

Standard

Criteria: (GB699-1988, and GB700-1988, and GB3077-1988, and GB702-1986, and QJ/HG02.17-1991)