| 摘要 |
<p>IMPROVEMENTS IN OR RELATING TO THE SUPPORTING OF DUCTING A method of supporting rectangular-sectioned ducting according to which the ducting is supported at each of a number of spaced positions along its length by means of a pair of opposed angle elements in which the ducting is directly or indirectly seated at its lower corner edges, the angle elements being secured together by means of a tie rod extending beneath the bottom wall of the ducting and being suspended from drop rods.</p> |
