... material of this twelve roller rolling mill middle roll is MC3,and the specification is 225*1400*2592. There are different ... as Cr2%(9Cr2Mo,86CrMoV7),Cr3%(9Cr3Mo,9Cr3MoV,,MC3),Cr4%(85Cr4NiMoV),Cr5%(8Cr5MoV,MC5) and Cr12%(Cr12MoV(D1),Cr12Mo1V1(D2),Cr12MoVCo)....... The ... in rolling mill of six roll has good strength and toughness . And the price quotation is in accordance with the customers ...