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Critical Systems’ Lightning Series (LS) heads feature our patented Super Cooling Technology. The LS heads were designed from the ground up for high amperage applications like copper welding and heavy wall pipe or tube, where a homogeneous single pass weld is preferred. In fact, the weld head body remains cool to the touch even when the cassette and collets reach and exceed temperatures of over 400 degrees Fahrenheit!

At Critical Systems Inc., we don’t just make welding equipment, we make welding better. From our compact CSI Mini Pendant to our breakthrough Red Metal Welding technology, every product is engineered to solve real problems, boost productivity, and deliver consistent, high-quality results. Whether you’re looking to extend equipment life, improve precision, or take on new materials like copper, CSI has the tools to keep you ahead of the curve.

Critical Systems, Inc. (CSI) is thrilled to announce the official launch of the Lightning Series (LS) Weld Head—the first and only orbital welding equipment capable of welding copper using patented technology. For the first time in the industry, welders, engineers, and fabrication specialists have access to a solution that delivers clean, strong, and consistent copper welds with unmatched ease and safety. And now, you can see it in action.

Critical Systems would like to recognize one of our partners in the local community: United Association (UA) Local 296 in Meridian,...

CSI was invited to the 2025 Pipe Trades Conference in Dallas in February of this year to showcase our patented copper orbital welding!

If you ask most people the question “what’s Firewatch” you will most likely be told that it’s a beautifully crafted adventure video game...