A device for the non-destructive testing of cylindrical or tubular test objects using X-radiation in tomosynthesis or laminography includes a mounting device configured to be spatially fixed at a predetermined site, a carriage attached to the mounting device and movable on a guide device in a first direction parallel to an X-axis and a C-arm disposed on the carriage. An X-ray tube and a detector are disposed opposite one another on the C-arm. The X-ray tube is movable in a second direction that is perpendicular to the X-axis, perpendicular to a plane covered by the C-arm, and parallel to a Y-axis. The detector is movable in a third direction parallel to the second direction. The C-arm may alternatively be replaced by a half shell. Also a device for the non-destructive testing of cylindrical or tubular test objects using X-radiation in a CT process includes a mounting device configured to be spatially fixed at a predetermined site, a carriage attached to the mounting device and movable on a guide device in a first direction parallel to an X-axis and a C-arm disposed on the carriage rotatable about an axis of rotation that is parallel to a Y-axis. An X-ray tube and a detector are disposed opposite one another on the C-arm and spatially fixed with respect to one another. Also a method for the non-destructive testing of cylindrical or tubular test objects.
