| 摘要 |
Improved coupling point for a couple of pipes characterized by realizing direct die-injection in plastic material on both pipe ends, a spacing element (31) inserted on the pipes both ends (1,2), and respective sleeves (33) which are inserted on the pipe ends (1,2) and extend beyond the pipe ends (1,2), the extension inside diameter of the sleeves (331) being the diameter for the keying to the pipes to be jointed; at least a part of the sleeve being inserted on the pipe (332) up to coating a suitable protrusion (11) of the pipe.
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