4 High Rolling Mill - Metal Rolling - Material Reducing MachineRolling mill consisting of four rolls or known as a 4 High rolling mill is used for reducing material to extremely small thicknesses.4r roller mill,Roller mill - WikipediaRoller mills are mills that use cylindrical rollers, either in opposing pairs or against flat plates, . Contents. [hide]. 1 Producing wheat flour; 2 Types; 3 Gristmill conversion; 4 Other applications; 5 Working principle; 6 See also; 7 References.
4r roller mill