... Hollow,Rollers. Supply according the customer's drawing Forged steel materials.Carbon steel:S20C/CK15/C.22,CK45/S45C/C45 ... S355J2G3,ASTM A105, A350 LF2 and others.Alloy steel:42CrMo4/SCM440/SAE4140,SCM420/25CrMo4/SAE4130,SNCM439/40CrNiMoA, ... /Rollers:The OD upto 3000 mm according the drawing.Length:3m and up or fix length.Delivery ... Jiangsu Zhuhong Forging Co.,Ltd Forged bars of Carbon steel and alloy ...