China High Quality Spiral Duct 45 Degree Bends …
Spiral Duct 45 Degree Bends from 80mm dia to 200mm dia are pressed. Our range of segmented spiral duct bends start at 224mm dia upwards. All spiral duct bends are half radius e.g. 100mm Bend = 50mm throat radius. All spiral duct bends for spiral duct have a male connection to fit directly inside galvanised spiral duct (secure using recommended ...