| 摘要 |
The invention relates to a mould in which plastic pipes are made by a centrifugal process. According to the invention, the mould comprises three cylindrical pieces () integral to one another, which form an internal cylindrical wall () having an internal diameter larger than 1 m and a length larger than 3 m, one of some flanges () being mounted at the end of each of the cylindrical pieces () and one of the ball thrust bearings () being mounted in connection therewith, where the latter bearing () has at least one peripheral surface () with at least a first portion which is placed under an angle higher than 0° and lower than 90° in respect of the axial direction () of the mould. |
