TIG Welding Root Pass Techniques for X-Ray Quality Welds

TIG welding root pass techniques and X-ray-quality welding explained in detail. The TIG (GTAW) process produces a clean, uniform weld that radiography can easily interpret. A true X-ray welder consistently delivers defect-free welds and can correct puddle issues in real time.

In this tutorial, I break down how to achieve X-ray-quality TIG root passes using constant-feed and dipping techniques. The method changes depending on pipe thickness, fit-up, bevel depth, cup size, and welding position.

For thin-wall pipe, you can freehand or walk the cup due to the shallow bevel.
For heavy-wall pipe, a smaller cup that fits between the grooves provides better control and smoother travel.

This video gives you real-world insight into placing strong, consistent root passes and mastering essential TIG welding fundamentals. With practice and proper technique, producing X-ray-quality root passes becomes one of the most valuable skills in TIG welding.
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My videos are recorded at working sites in various locations and welding positions.
90% of my welding projects in videos are x-rayed, and if you like to see hands-on projects, welcome!

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