Pressure piping and suction piping for filter systems. The bend has a streamlined design with a large radius for a better transportation of the dust. The centrifugal fan creates high overpressures and low-pressures that must be accommodated by the piping system without excessive deformation. Flange connections are required for the assembly and are to be provided by the customer. These allow for an easy exchange of individual components in case of later wear and tear.