I have a selection of pipe that was used with a haylage tower we took down last year. It is much heavier duty than ventilating ducting. I think it is 17" but need to check exact measurements. Mixture of lengths, straight and bends. There will be some clamps to join them. The pieces with cut ends are from a telescopic pipe that was inside and probably scrap. I also have a fan/blower that is in working condition to go with them and one spares/repair. Guess it would be good for sawdust/woodchip. Any interest get in touch and I can get more details.
Located north cumbria.
Located north cumbria.