Migatronic Sigma One
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Sigma One by Migatronic
Choose from the Sigma One 230 & 270 or the Sigma One 300/400/550
One purpose. Welding.
A robust MIG/MAG inverter welder. Designed for light and heavy duty use in manufacturing plants of all sizes. Powerful, simple and reliable.
High duty cycle – hours of welding
Produce high-quality welds
Faster welding with pulse
For continuous welding or occasional use
Expand the machine with IGC, Pulse, and more, for example.
Sigma 300/400/550 Available in Compact, Water-cooled, or with Intermediate Package up to 30 Meters (Air-cooled), or 20 Meters (Water-cooled).
One gets the job done
Sigma One’s powerful and reliable performance meets many different needs in professional manufacturing facilities: from simple welding and maintenance projects to continuous welding in busy workshops. Use it for carbon steel stainless steel and aluminum.
Faster welding with pulse
Improve productivity even further with the pulse process. Low heat input and spatter-free pulse welding reduce the risk of damaging the steel. The process gives you better control of the weld pool and a better weld.
Produce high-quality welds
With Sigma One, you get the essential programs and features you need to produce strong, high-quality welds. Its high versatility allows you to process a wide range of materials and thicknesses.
You can increase precision and accuracy when welding both base layers and additional layers. Sigma One can help you succeed in your welding projects.
One gets the job done
Sigma One’s powerful and reliable performance meets many different needs in professional manufacturing facilities: from simple welding and maintenance projects to continuous welding in busy workshops. Use it for carbon steel stainless steel and aluminum.
Faster welding with pulse
Improve productivity even further with the pulse process. Low heat input and spatter-free pulse welding reduce the risk of damaging the steel. The process gives you better control of the weld pool and a better weld.
Produce high-quality welds
With Sigma One, you get the essential programs and features you need to produce strong, high-quality welds. Its high versatility allows you to process a wide range of materials and thicknesses.
You can increase precision and accuracy when welding both base layers and additional layers. Sigma One can help you succeed in your welding projects.







