| 摘要 |
An internal bead trimmer for removing the internal bead formed in the production of welded metal tube, in which the trimmer is mountable for relative axial movement within a tube. The trimmer includes: a bead cutting member; a measuring jet orifice carried by the trimmer downstream of the bead cutting member, said measuring jet orifice being connectable to a source of fluid pressure; and means for enabling the fluid pressure at the outlet of the measuring jet to be sensed; said orifice being so arranged and disposed that in use it follows the path of the cutting member at a predetermined spacing from the internal tube wall and directed at the weld line.
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