... the round bar all the time .Grade: T5 , T8, S45C, S50C,SCM440 , AST5120, 5140,4130, 1022, round barWe are making the round steel bar all ... cooperation will expand even in future.The flw is our round bar stock :GRADESIZE Q23550556080 20#6050150 45#250 B26050 42CrMo160 38CrMoA15070 ... GCr155080 SAE862010090 15CrMo70 18CrMoS480756555 25B35H220 30CrMo5060 35CrMo85 40CrMnMo7090140 55SiCr75 65Mn80 round bar