| 摘要 |
The present invention relates to an apparatus for producing pipes of a mouldable material, preferably plastic, comprising an extruder, a cylindrical mould comprising chill moulds (4, 5), a mandrel (8) inside the extruder and a kernel (9) as an extension of the mandrel. The mandrel is attached at its front end to the extruder. The mandrel (8) and th e kernel (9) can be kept concentric with the extruder and the mould if the mandrel and the kernel are joined to each other in such a manne r that the angle between their centre lines is adjustable.
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