In the design of the screw shafts, we pay particular attention to sturdy support pipes with wall thicknesses of up to 12.5 mm and screw threads with plate thicknesses of up to 12 mm. In the standard version, the screw threads are continuously welded with the support pipe on the conveying side. In this way we achieve very high screw shaft stability. This guarantees high availability for the conveyor screws with an accordingly long service life. For the customer this means extremely low maintenance costs.