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Vertical Duct Seam Closing Machine - China

price: 9000.00 Dollar US$

Generally, 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 mahicnes .

The pittsburgh seam shows much better results and can also be used for a higher pressure.

Vertical duct seam closer is what we highly recommed .

Pittsburgh joint is commonly used to join the seams of metal ducts .

Seam closing has traditionally been accomplished by manually hammering the margin of the seam against the duct wall ( penning ) .

Disadvantages of such peening inclufe the time required and the almost intolerable noise produced .

The latest desigh in seaming technology is now available .

At the pittsburgh joint .

the individual seams are called pittsburgh seam ( pittsburgh lock ) and standing seam ( right angle lock ) .

On a pittsburgh joint, the operator pushes the standing seam into the pittsburgh seam, fastens them to each other and closes the joint on a seam mahcine .

Model No.

Style Thickness Range Duct Length Speed

VWSC-1600 Verical 0.5-1.2mm 1200-1550mm 24m/min


Company Contact:


  • Phone: +862089817565

  • Address: Room 403, East Tower, Jiadu Busines, Guangzhou , Guangdong , China

  • Email: Email


Published date: October 16, 2019

  • Business Description: Comifo Duct Manufacture Machine Co.,ltd is a subsidiary of Comifo Group, the main duct production line, fire damper production line, plasma cutting machine,lock former machine, flange machine and other air duct processing equipment, the registered capital of 9 million yuan , The factory area of 140,000 square meters, has accumulated nearly 20 years of manufacturing experience, independent research and development production, with 24 national patents, product sales in 128 countries around the world.

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