,steel round bar,high-quality,good pricespecifications 3,4,4.75,7.94,3.5*8,3*15 material Material Q195;Q235;Q345=16Mn;10#;20#;45#;15CrMo,20CrMo,35CrMo,42CrMo,5CrMnMo,38CrMoAL,YF45MnV,Cr12 etc.specificationsOD:10mm-450mm square steel bar,specifications 3,4,4.75,7.94,3.5*8,3*15