Baja bunder dipérang dadi telung jinis: hot rolled, forged, lan cold drawn.Spesifikasi baja bulat hot-rolled yaiku 5.5-250mm.Antarane wong-wong mau, 5.5-25mm baja babak cilik biasane diwenehake ing mbendel saka bar sakcara, kang asring digunakake minangka pitulungan, bolts lan macem-macem unsur Machine;Baja bunder sing luwih gedhe tinimbang 25mm utamane digunakake kanggo manufaktur unsur Mesin, billet tabung baja mulus, lsp. Nomer: Q195, Q235, 10, 20, 35, 45, Q215, Q345, 12Cr1MoV, 15CrMo, 304, 316, 40Cr, 40Cr 20CrMo, 35CrMo, 42CrMo, 40CrNiMo, GCR15, 65Mn, 50Mn, 50Cr, 3CrMo 2w8v, 20crmnti, 5crnnmmo