... price ,working smoothly 2low drum screen noise 3simple structure 4high efficienty DRUM SCREEN .Description Drum screen includes hexagon drum, frame, funnel, decelerator ... industry and chemical industry, too..Technical parameter Model Drum size (m)Drum slope (°)Drum speed (r/m)Mesh size (mm)Max ... ,any change is subject to the products.Jieli machine co,.ltd welcome you !!! 2011 HOT SALE WITH HIGH ...