| 摘要 |
<p>The invention relates to a process for making a roof covering using steel sheets joined to one another. According to the invention, the process consists in upward bending an edge of a 0.35...0.5 mm-thick steel sheet plate () on a distance () of 3 cm while an adjacent steel sheet plate () is bent downwards on the same distance () of 3 cm and is superposed over the first plate (), the first bent () catching to the second bent () thereby resulting a continuous plate () with a central joint () which is hammered, after which a resulting continuous surface () is cleaned by removing the impurities, is dried and coated with a ground coat (), then with a soundproofing coat () and, when dried, the surface is covered with a mineral fat coat ().</p> |
