This creation is a floating tube assembly, which includes a floating tube, two first positioning units, and a rope. The floating tube includes a tube body, and two ends of the tube body are respectively inserted into a cap. The floating tube defines mutual A vertical first reference plane and a second reference plane, the intersection of the first reference plane and the second reference plane is located on the axis of the pipe body, and the two first positioning units are disposed on two sides of the floating pipe. Ends are located on the first reference surface, and each first positioning unit forms a first positioning channel, the axis of the first positioning channel is located on the first reference surface and intersects with the axis of the pipe body, and the rope is tied It is wound around the buoyant tube and passes through the first positioning channels of the two first locating units to be fixed in position. The binding of the rope can improve the stability of the cap assembly and the buoyancy state stability of the buoyant tube assembly.本創作係一種浮管組件，其包含一浮管、二第一定位單元及一繩子，該浮管包含一管體，該管體的兩端分別插組一封蓋，該浮管上定義相互垂直的一第一基準面及一第二基準面，該第一基準面與該第二基準面的交線位於該管體的軸心上，該二第一定位單元設於該浮管的兩端並位於該第一基準面，且每一第一定位單元形成一第一定位通道，該第一定位通道的軸心位於該第一基準面且與該管體的軸心相交，該繩子綁繞於該浮管並通過該二第一定位單元的第一定位通道而穩固定位，該繩子的綁設可提高封蓋組設的穩固性與浮管組件的浮力狀態穩定性。
