... bar. 2) Dia.: from 10mm to 300mm. 3) Length: from 3000mm to 5800mm Materials: jis scm440,sae 4140,aisi 4140 ... steel,including stainless steel, tool steel, die steel,bearing steel,etc. And in shapes, we provide steel round bar, steel square bar,steel flat bar, steel plate, steel sheet, steel coil, steel wire, ans steel ... in Asia, South America, and Africa. Steel round bar C45, S355J2G3, 42CrMo4, 50CrV4