Detailed Product Description cast iron product speformance:1,Specification:100*100-3000*8000(mm)2,Usage: ... reaches Hb170-240 , It goes through twice of man the product stable in accuracy and good in grinding resistance.4,Accuracy ... , which is divided into four levels of 1-4cast iron product sprecification:Type(mm)Precision Grade (μm)0123100*1004816200*10051020200*20051020300 ...