| 摘要 |
<p>Pipe is clad with a foam material by placing the pipe in a mould which is open at the top, introducing into the space between the bottom of the object and the mould a foamable material, causing it to foam, loosening the partly coated object from the mould, turning it axially and subsequently coating another part of the pipe in the same or another mould which is open at the top, and if necessary repeating the process until the whole object is coated.</p> |
