Wel-Fab and Engineers manufactures Pug Mill with Double Shell Type. Wel-Fab and Engineers manufactures Paints Machinery, Resin Plant and Chemical Equipment. The Pug Mill with Double Shell Type is utilized to process Stiff and Pasty [buttery] consistency products. Dispersion is achieved by internal friction between particles when the material moves to and fro by the action or rotation of screw [Ribbon] blade. Both reverse and forward motions are affected to attain a smooth and pasty finish without solvent loss and rise in temperature.