| 摘要 |
PURPOSE:To facilitate connection of protective pipes and, at the same time, to make it possible to surely joint and connect them. CONSTITUTION:A parallel section 3a of one pipe 1 is inserted in a joint pipe 5 of the other pipe 1, and then, by revolving one pipe 1 (or the other pipe), a male screw 4b of one pipe 1 is monolithically screwed in a female screw 7a of the joint 5 of the other pipe 1. A projection of a circular elastic packing 8 is connected to the parallel section 3a of one pipe 1 in a binding state. Both pipes 1 are connected to each other with screws through the joint pipe 5, so that the connection is easily made within a short period of time, and firm joint strength can be obtained. |
