Industrial Fly Ash Screw Conveyor can handle bottom ash, fly ash, bed ash and ash clinkers that result from combustion of coal, wood and other solid fuels. The Screw Conveyor can employ pneumatic ash conveying/ mechanical ash conveying systems. The Screw Conveyor includes angled walls converging at rectangular opening controlled by grate door. Industrial Fly Ash Screw Conveyor is rigid in construction and requires minimal maintenance.