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Our address: Main Buildings at 102 E. Railroad Ave., Knoxville, PA 16928
Main Buildings at 102 E. Railroad Ave., Knoxville, PA 16928
Phones: +15704046968
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+1 570 404 6968
Double Standing seam roof panel machine SS4E-15

The portable roof panel roll forming machine is intended to run multiple panel profiles providing you with roofing in various widths and shapes.

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Double Standing seam roof panel machine SS4E-15
Industrial spiral tube former TF1500S

Advance model of the Industrial Spiral tube former TF1500S combines operation with Flexible and Fixed molds, Disc and Saw cutting.

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Industrial spiral tube former TF1500S
Our products
HVAC round spiral duct making machine HVAC round spiral duct making machine
Decoilers Decoilers
Downspout equipment Downspout equipment
Elbow making machines for Round & Square ducts. Elbow making machines for Round & Square ducts.
HVAC Square Duct-work Machinery HVAC Square Duct-work Machinery
Lockforming machinery Lockforming machinery
Metal Spinning lathes and tools Metal Spinning lathes and tools
Rollforming Roofing and Custom Design machinery Rollforming Roofing and Custom Design machinery
Metal cutting and shearing equipment Metal cutting and shearing equipment
Special equipment Special equipment
Useful Articles Useful Articles

Welcome to Stangroup US website! 

Stangroup is a company with over ten years experience in fields of engineering, building and service of various custom sheet metal forming machinery and equipment. Main fields of operation: HVAC, Downspout, Roofing, Roll-forming, Metal Spinning and Bending machines. For present moment company represented in four countries: United States, China, Russia and Ukraine.


The US branch DBA Liberty Seamless Machinery

We'll be glad to be a partner in your business development.


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11/03/2026
Máquina para fabricar paneles metálicos para techos | Liberty Seamless
Máquina para fabricar paneles metálicos para techos | Liberty Seamless
En la industria moderna de la construcción, la velocidad y la calidad de producción juegan un papel decisivo. Cada vez más empresas constructoras y talleres metalúrgicos buscan soluciones que les permitan fabricar paneles metálicos para techos direc..
11/09/2023
Rollforming machines: how they work, what types are available, and their uses.
Rollforming machines: how they work, what types are available, and their uses.
So you’re buying a roof panel machine. Buying any type of machine is a big investment. Knowing how portable rollforming equipment can benefit your business, what you can expect when buying a Liberty roof panel machine and how to keep it running for a long..