1) Hot rolled bar. 2) Dia.: from 10mm to 300mm. 3) Length: from 3000mm to 5800mm Materials: jis scm440,sae 4140,aisi 4140 ... ,weapons,railways,bridge,pressure vessel, machine tool,gears in gearbox, gear shaft, cam, worm, claw clutch, etc.ProductsOur products mainly ... steel,etc. And in shapes, we provide steel round bar, steel square bar,steel flat bar, steel plate, steel sheet, steel coil, steel wire ...