They are used to convey materials from one place to another place whether the object is lighter or bulky to carry, screw conveyors are the most reliable tool to perform the action for these. It is composed of weilded steel pipe that performs as a flight to carry them and move the objects. Used at congested locations more commonly. Their handling capabilities make it perfect choice for you to handle the materials where the space is limited for you or where other tools cannot reach well.