... ;(2)The whole flat for three rollers on the four roll, molding shaft diameter Φ 80 mm (material 45 # through the quenching ... and tempering treatment), roll materials for GCR15, quenching HRC58 ° to 62 °, the surface hard ... Cr12 quenching process, steel around to arbitrarily regulate)(4)Cut off the hydraulic shear (material Cr12 quenching HRC60-62)(5)Main ...