| 摘要 |
A box-and-pin joint of screw sections of standpipe in which unit of axial fixation is equipped with eye and ring fixed at outer surfaces of half-clutches and connected to each other by means of chain with one end fixed in eye by means of fixation axle with stopper ring, and the other one - in slot provided in ring by means of pin pressed by spring placed in through opening provided in ring, this intersects with the slot of the ring at right angle, at that the ring is equipped with end cover withopening coaxial to through opening, and round the pin near the ends of the spring elastic sealing rings are installed.
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