... motor Blower system Ring-die and rollers materials are alloy steel,Hardness more than 52 The new product FD series “double vertical ring ... time,The main function is dedusting and discharge steamWorking parts:Ring-die and rollers materials are alloy steel,Heat treatment made ... is 4 rollers working,Increase press rate then increase capacity,Ring-die is “vertical double-deck”structure,It can use one ...