| 摘要 |
A rubber tube 21 for dredging work has a tubular body 23, 24 made of rubber having a plurality of strengthening cloth layers embedded therein, and a plurality of metal rings 26 axially arranged in a suitably spaced relation and embedded in an inner peripheral surface of said tubular body. The metal rings 26 have their joined surface with the tubular body placed in parallel to the axis, and both axial ends thereof are thin in wall thickness. Thereby, the contact area between the metal ring 26 and the tubular body is increased to strengthen the bonding and to minimize peeling-off of the joined surface between both ends of the metal rings 26 and the tubular body. <IMAGE> |
