Cold ribbed bar 1.Size (diameter):5-12mm 2.Cold rolling bar 3.Three Ribs bar 4.Intensity level (MPa):550/650 1.Rolling kinds of type finished products ,can do according followingOutlet diameter(mm)Intensity level (MPa)Raw material diameter(mm)Steel raw materials(mm)The first rolling diameter(mm)The second diameter(mm)Total deformation(Area rate)%1155013Q235J12.31128.41055011.5Q235J11.31024. ...