| 摘要 |
<p>Manufacturing equipment of electric resistance welding pipes is provided, in which lateral edges of a strip for an electric resistance welding pipe is shaped with appropriate tapering immediately before electric resistance welding so that welding quality is kept excellent. (1) Cutting or shaving means 3 is provided after a leveler 2. (2) At least one finpass forming stand 4 is provided, which includes a fin having tapering having at least 2 stages. The manufacturing equipment of electric resistance welding pipes satisfies at least one of the above (1) and (2).</p> |
