Steel grade: A105, S355J2G3, S355Nl, A182, 316/ 316L, F51, F60, 4140, 4340 Skype: halenliao607 ... heat resistant steel ( C45, ST 37-2, ST 52-3N, S355J2 +N, S355NL , 4140,42CrMo4, 4145H,4340, 316,316L, 321, 18CrNiMo7-6etc ... OD 6000mm Disc: Max OD 3500mm Roller: Max OD 3000mmA105, S355J2G3,S355Nl, A182 316/ 316L, F51,F60 , 4140, 4340 Forging Discs ...