... agriculture,foodstuff,grain,chemical Helical Blade;Screw Blade;Spiral Blade;Auger BladeWe can supply the screw-flight with the following demension: inner ... lenth,any pitch,and both rotating directions.we have three manufacturing process accoring to the size of screw-flight:1 continued cold ... for any product but need making specified mold. Helical Blade;Screw Blade;Spiral Blade;Auger Blade