... disc blade are made of 65Mn,size can be as customer's wish,thickness from 3-12mm,HRC 38-44 Our disc ... 60Si2mn,finishing:paintedHRC 42-50,The size can be as customer's requirements. Our farm equipments include Farm & Garden Tractor,trailer, Rotavator ... specifications can be as different options of customer, and we also can manufacture according to customer’s drawing or sample. With long time ...