We can supply the middle  roll at the surface hardness of  HSD75-85.  And in one work roll the hardness error is lessthen 3HSD.The depth of the hardness is more than 80mm at  radius in material Cr12%. The material of those working rolls are Cr3 ,Cr5 ,Cr8 or Cr12. This work roll is used in cold reduction mill of 12 to 20 roller. 

   And generally speaking , the price quotation is in acdordance with the customers' drawings and the weights of the products.