| 摘要 |
<p>A sheating form piece, lining pipe form piece and intervening insertable multi-piece insulating-plate make up the layered form piece for a chimney or similar element. The sheathing piece (2) has lengthways grooves (5) inside it, engaged by the insulating-plate pieces (7) so as to guide and fix them. There may be two such grooves, while the transverse insulating plate pieces (8) are butt inserted between the first two plate pieces. The insulating layer can be easily assembled from pieces and fixed in place to provide continuous sealing.</p> |
