| 摘要 |
<p>The present invention relates to a steel pipe inner surface machining apparatus, which comprises: a bed plate of a fixed size equipped with a rail; a rotating part installed to rotate with a rotation of a drive motor on the upper side of the said bed plate; and a movable pressurizing part which forms a groove of a certain shape inside a steel pipe by a rolling holder installed to move along the said rail when pressure is applied inside the steel pipe revolving with the said rotating part. The invention not only ensures fine-quality coating as the surface area of steel pipe widens by the said groove, but also thickens coating for long-term use. In addition, the simple structure of the said apparatus reduces the likelihood of failure.</p> |
