H Anger’s Söhne has several drilling rigs of this type at its disposal. These HAS DBA 4s are very powerful drilling rigs that can be used very flexibly, thanks to different modules in their inventories. A truck with service crane (helping hand) facilitates the run-in of pipes and, thus, makes it possible to insert great lengths of drill pipes. All of the company’s drilling rigs of the type HAS DBA 4 are able to construct wells with a casing diameter of up to 558 mm. Yet at the same time they have a compact footprint and work very quietly due to noise protection.