| 摘要 |
<p>This invention relates to a method of extruding pipes on horizontal presses (20), and in particular relates to a method of extruding pipes wherein a removable centering plug (226) is provided to prevent displacement of the central guide rod (220) during the initial stages of pipe extrusion. The centering plug (226) is adapted to fit around the guide rod (220) and within the extrusion orifice (216). The centering plug (226) is concentrically fitted within the extrusion orifice (216) and is capable of being extruded through the extrusion orifice (216).</p> |
