| 摘要 |
<p>A method for producing C-shaped metal profile bars for support structures for panels, particularly of plaster-board, characterised by subjecting a metal strip of width less than the development of the profile bar to be obtained, to the following operations: incising at least that band of the strip which in the C-shaped profile bar is to form the central web, profile-forming said strip, transversely stretching the band subjected to incising, pressing areas of said central web along said stretched band to bring them outside of the plane of the web.</p> |
