| 摘要 |
<p>The tubular spiked rivet has a principal tubular shaft (21) which has a large diameter portion (22), a reduced diameter portion (23) and at the top end is returned to form a small collar (24). The double section shaft is pushed through a hole in the circular support plate (27) and acts as both guide and integral bracing. The nail (25) is placed inside the shaft and has a length greater than the thickness of the insulation panel to be fixed. The circular head (26) is driven up into the narrow part of the shaft for fixing.</p> |
