| 摘要 |
<p>Disclosed are a method for installing an orifice ring, and a pipe forming device used therein. The present invention is realized through processes of: heating a metal tube; mounting an orifice ring on a holder installed inside the metal tube expanded due to the heating; and cooling the metal tube. According to the present invention, the heat deformation of the orifice ring due to welding can be fundamentally prevented when fixating and installing the orifice ring inside the tube. Moreover, according to the present invention, as the deformation in the process of installing the orifice ring inside the tube does not occur, a flow rate can be precisely measured and controlled by the orifice ring.</p> |
