Comifo Duct zipper also called duct closing machine, duct seaming machine.

General three different seams are common in the industry to connect the corners of the ducts: button lock seam, Pittsburgh seam and Duct seam. Button snap lock and Pittsburgh lock can be produced on the Comifo lock forming machines. The Pittsburgh seam shows much better results and can also be used for a higher pressure.

Comifo Duct Zipper, Germanic duct seaming style, allows you to produce the highest quality duct much faster, easier and more profitable than ever before. This new engineering has been taken the seaming process from the traditional three steps down to only one.

This machine is suitable for mate flange duct and C cleat joint duct manufacture. Combined with Comifo duct manufacture compact lineII/III, hand cleat bender, production efficiency for small ducts can be greatly improved.