Comifo spiral tube forming machine, also called spiro tube machine,spiral machine,spiral duct machine There are two kinds of spiral tube forming machines. Forming heads required and forming heads not required. Spiral tube forming machine processes round duct of maximum diameter up to 1400mm. With strong seal, flexible, It can be adjusted to make ducts with different diameters by changing different forming strips. FHR-1400Diameter Range φ100-φ1400mm Length of the Tube 100-8000mm Thickness Range 0.4-1.2 mm (18-30ga) Speed 0-10m/min (0-32FPM) Coil Width 137mm Cutting Unit Saw Cutting Cutting tolerance ±0.5mm Optional Diameter of Forming Strips φ100, φ125, φ160, φ180, φ200, φ225, φ250, φ300, φ315, φ355, φ400, φ450, φ500, φ610, φ710, φ800, φ1000, φ1120, φ1250, φ1400 Assembling Picture: More Detailed Pictures: