| 摘要 |
The pipe joint comprises a tubular member having a spherical outside surface and a tubular member having a conical inside surface engaging said spherical outside surface. Alternatively, the pipe joint comprises a tubular member having a convex spherical inside surface and a tubular member having a conical outside surface engaging said spherical inside surface. In each case, said conical surface consists of a plurality of frusto-conical surfaces having different cone angles. <IMAGE> |
