1)forged round steel bar 2)standards :GB,JIS,ASTM and so on 3) ... ,35CrMo,42CrMo ,etc. 4)diameter:5.5-250mm 1)forged round steel bar 2)standards :GB,JIS,ASTM and so on 3 ... ,42CrMo ,etc.4)diameter:5.5-250mm5)best exporter TypeRound steel barStandardGB/ASTM/DIN/JIS and so onGradeQ195-Q345,35CrMo,42CrMo ...