| 摘要 |
<p>The edges (11, 12) of the liners (7, 8) touching each other have ribs (9, 10) with widened heads located at a short distance from the actual edge. The ribs are encompassed in pairs by a stiff C-profile (6) fixed to the pipe, and are fixed in this position by the inwards bent plate edges. These edges (11, 12) extend as far as the base of the C-profile (6), and are thinner than the plates (8, 9) themselves. The sum of twice the head width and twice the edge thickness of the plates equals the width of the C-profile (6), and the head height is adjusted to the depth of the C-profile (6).</p> |
