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Product Details
Condition | New | Type | Other, pittsburgh lock seam closing | |
Pipe Material | Other, Galvanized Steel | Application | Other, vent duct | |
Place of Origin | Guangdong, China | Brand Name | Comifo | |
Model Number | VWSC-1600 | Certification | CE |
Standard export packing
Product Description
Comifo Whisper-Loc Seam Closer, is also named seaming machine, Standing Seam Machine, whisper-loc seam closing, seam closing machine, etc.
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 c an also be used for a higher pressure.
Whisper-Loc Seam Closer are available in the horizontal or vertical and close pittsburgh seams. 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 (peening). Disadvantages of such peening include the time required and the almost intolerable noise produced.
The latest design in seaming technology is now available. At the Pittsburgh joint, the individual seams are called Pittsburgh seam(pittsburgh lock) and standing seam(right angle flange). 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 machine.
Model No. |
Style |
Thickness Range |
Duct Length |
Speed |
VWSC-1300 |
Vertical |
0.4-1.2mm 18-30 Ga | 1000-1250mm |
24m/min (78FPM) |
VWSC-1600 | 1000-1550mm | |||
HWSC-1300 |
Horizontal | 910mm, 1130mm, 1160mm | ||
HWSC-1600 | 1130mm, 1160mm, 1440mm |
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Company Profile

Comifo Duct Manufacture Machine Co., Ltd is one of the leading companies which specializes in machine manufacture, involving in Heating, Ventilation and Air Conditioning (HVAC) fabrication, coil processing, roll forming, etc. Advantages With its advanced technology, Comifo grows to be a company of designing, manufacturing and selling machines to customers all over the world, from whom we obtain reputation and precious improvement advice to meet the world's verifying technology. This is so called INNOVATION, the spirit of the ever-lasting development of a company, impresses the world of machinery. Comifo's Research & Development Department generals technical and innovative machine designers who take training regularly. By doing this, top machine technology can be seen from a piece of Comifo's work, such as the patented Hydraulic Fold-seamer (Seamatic), as well as Comifo patented Automotion Pittsburgh Lock Former. Our products have been exported to Poland, Switzerland, Turkey, Russia, U.S.A., Canada, Mexico, Venezuela, Saudi Arabia, UAE, Syria, Singapore, India, Malaysia and so on. After-sale Service Comifo offers an unrivaled level of after-sales care and attention. Besides 24-month guarantee, operator training is encouraged and accessible. Comifo does everything to make you be assured of our most honored service. For your convenience, we've listed as much detail as possible about each piece of equipment. We believe your feedback is always important to us. From such precious feedback, we know how we have been doing and how we could improve in the future. Please write us your comments, suggestions or questions and we will reply to you soon. If you would like additional information or if you have questions, please contact us.
Contact Us
- Comifo Duct Manufacture Machine Co., Ltd.
- Contact nameHelen Lin Chat Now
- Phone86-20-28879738
- Address3F,No.62,Jianzhong Road,Tianhe Software Park,Guangzhou,China, Guangzhou, Guangdong
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