Hot Forged Steel Round Bar 1.Grade:S45C, SCM440,SCM415,CK45,42CrMo4,16MnCr5 etc. 2.Size:150mm~700mm ... Hot Forged Steel Round Bar1.Grade: Carbon steel,Alloy steel: S45C, SCM440, SCM415, CK45, 42CrMo4, 16MnCr5, S355J2G3, ASTM A105, 39CrNiMo3, 18CrNiMo7 ...