| 摘要 |
A coupling for connecting pipes, having a seal, flanges, a threaded portion and a nut, where the end portion of the pipe is equipped with a concentric press surface located immediately proximal to the periphery of the pipe and designed to be able to take an axial pressure from a preloading tool, which pressure is distributed evenly or point-by-point about the periphery of the pipe. The preloading tool has two end sections connected to two or more rods, each rod being equipped with a hydraulic cylinder. |
