... ,430,430F,431 etc. 2. Technics: Hot-rolled, Hot-forged,Cold-drawn, Centerless Gringing 3. Surface: Peeled, Bright, Polish 4. Diameter ... range: Hot-rolled bar : 5.5-110mm Hot- forged bar: 110-400mm Cold-drawn: 2-50mm Centerless grinding bright round ... bar: 5.0-40mm Peeled bright round bar: 40-300mm ...