| 摘要 |
The present invention relates to a pipe-connecting part (12) provided on at least one of the pipe-ends (11) included in a pipe-connection (1) preferably for polyethylene pipes intended for high media pressures. The pipe-connecting part (12) consists of a step-formed sleeve (14) with the same inside diameter all along its length and at least two from the central part of the sleeve (14) on both sides of a step (15) in both directions reaching sleeve-parts (16, 17). One of the sleeve-parts (16) is made with a sharp edge in its free end to make possible the cut-away of a predetermined part (19) of the inner mantle-surface of the pipe (2) during fitting, while at the same time the sleeve-part (16) has an outside dimension somewhat larger than the inside diameter of the actual pipe-end (11) and the other sleeve-part (17) has an outside dimension mainly as large as the outside diameter of the actual pipe-end (11) and is co-operative with parts included in the pipe-connection (1). The invention also relates to a method and a device for manufacturing a pipe-connecting part equipped pipe-end, included in said pipe-connection. |
