Round duct Fitting Machine for air duct connection (tube flanging machine) Thickness: Black Steel 0.4-1.2 mm Flange width: 7 -12mm; Diameter: φ100-1250 mm If you are interesting in our tube flanging machine, pls contact with us. Jv@jack-aiva.com / whatsapp +86 13915206868 www.ductworkmachine.com