... , SCr420,Scr430, SCr435,41Cr4 etc diameter:30-150mm MQO:5MT alloy steel round bar material:45CrNiMov, SCr420,Scr430, SCr435,41Cr4 etcdiameter:30-150mmMQO:5MT ... SCM420,4118,4130,SCM430,30CrMoA,4130,SCM430,25CrMo44135,SCM435 20CrMnSi,20CrNiMo,8620,SNCM220,SNCM439 diameter:30-150mm (2) carbon steel round bar material: 1020,S20C ...