| 摘要 |
The invention relates to a device for extruding plastic pipes. In this extruding device, a water-cooled calibrating sleeve (5) is arranged in a through-opening of a wall-thickness measuring apparatus (4), which is positioned between the extruder (1) and the run-through cooling chamber (3). The calibrating sleeve (5) is designed on its inner wall side with, in particular helically running, channels (17, 18) for the supply of water and for a vacuum. …<??>Fig. 1 is intended for publication. …<IMAGE>… |
