... steel round bar,size:90mm to 800mm,Rough turned,Normalized,Annealed, Quenched and Tempered Forged steel round barSteel grade:Carbon steel: ... C.22,C45,CK45,C60,CK60;C45E; Alloy Steel:Chinese Standad:16Mn,20Mn,30Mn2,30Mn5,40Cr,Q345D,Q345E ... B16,F11,F12,F22,F5,F9,51Cr4. Tool Steel:1.2714,H13,H11,P20,SKD61;Delivery condition: ... 3,Class 2; And Sep1921 Class C/c,D/d,E/e, Or ASTM A388 Standards;Grain Size: ...