| 摘要 |
A tubing expansion device ( 20 ) is adapted to be advanced axially, without rotation, through tubing ( 10 ) to be expanded. The device ( 20 ) comprises a body ( 22 ) and a plurality of expansion members ( 30,32,34 ) mounted on the body ( 22 ), the expansion members ( 30,32,34 ) being independently radially movable. The expansion members may be rotatable, or may be non-rotating.
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