| 摘要 |
<p>A pipe straightening machine comprises at least one lower roll (2a) and an upper roll (2b) journalled in respective supports (5), spaced to a distance D between their axes, the machine including, for at least one of the rolls (2a,2b), a hydraulic cylinder-piston unit (6) acting on respective supports (5) thereof to change said distance D between axes. <IMAGE></p> |
