The automatic flexible duct connector production Line is consisted of de-coiler, hydraulic punching, roll former and notching, cutter then the belt recoiling. The raw material of Flexible duct connector are the GI steel sheet and Fire-Resistant Fabric GC-PV (Polyester Vinyl), GC-SI(Silicone),GC-NE(Neoprene),GC-CV(Canvas). It can be installed between fans or similar equipment.