Back Up rolls for steel sheets Back Up rolls for steel sheets Specifications1.D80~D900mm2.C35E,C45E,100Cr6,SAE52100,etc. ... NameSpecificationMaterialWork RollDia. 60~ Dia. 1000mm9Cr2Mo, 86CrMoV7,MC3,MC5,etc.Back Up RollDia. 240~ Dia. 1500mm9Cr2Mo, MC3,MC5,etc.Intermediate Roll≤Dia ... ,EN31,51200,SUJ2,100Cr6,K310,34CrNiMo6,36CrNiMo4,42CrMo4,86CrMoV7,Cr 2%, Cr3%, Cr 5%, etc.3 Surface Hardness:max 100 HSD4 ...