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There are different specification middle roll. they are semi-finished products,the specification is from dia.200mm to dia.850mm.We can supply the roll at the surface hardness of HSD65-85. And in one roll the hardness error is less than 3HSD.The depth of the hardness is more than 30mm at radius in material MC3. We can supply the roll with the material such as Cr2%(9Cr2Mo,86CrMoV7),Cr3%(9Cr3Mo,9Cr3MoV,,MC3),Cr4%(85Cr4NiMoV),Cr5%(8Cr5MoV,MC5) and Cr12%(Cr12MoV(D1),Cr12Mo1V1(D2),Cr12MoVCo)....... The middle roll in rolling mill of six roll has good strength and toughness . And the price quotation is in accordance with the customers' drawings and the weights of the products.
forged middle roll