Round pipe outer diameter detection device for construction engineering

The utility model discloses a circular tube outer diameter detection device for construction engineering, which belongs to the field of construction engineering, and comprises a workbench, a measuring plate, a threaded sleeve and universal wheels, one side of the workbench is fixedly connected with a fixed block, the top end of the fixed block is movably connected with a movable roller, and the movable roller is fixedly connected with the measuring plate. And a bidirectional rotating shaft driving device is mounted in the middle of the top end in the workbench. According to the utility model, a circular tube to be measured is placed at the top end of the workbench, and the bidirectional rotating shaft driving device is installed at the middle position in the top end of the workbench, so that the bidirectional rotating shaft driving device can be started to drive the first threaded rods at the two sides to rotate; a first threaded rod is arranged on the measuring plate, a moving seat on the first threaded rod