Pipe welding is one of the highest-skill disciplines in the trade, and watching a complete 4-inch pipe weld from root pass to cap is one of the best ways to internalize the multi-pass progression that distinguishes pipe welders from plate welders.

This video walks through the full GTAW (TIG) sequence on a 4" pipe joint. The value here is the continuity — seeing how the root bead is fused at the bevel land, how the hot pass cleans up and reinforces the root, and how subsequent fill passes are stacked and tied in before the final cap. Each pass has its own torch angle, amperage range, filler manipulation, and travel speed, and watching them back-to-back makes the relationships between passes visible in a way that isolated demo clips cannot.

For anyone studying for 6G certification or learning open-root TIG on pipe, the key things to watch for are: keyhole size during the root, the dip-and-pause filler rhythm, how the welder rotates around the pipe to maintain consistent puddle position, and the tie-in technique at stop/start points.

Caveat: the channel is brand-new (10 subscribers) and the narration is in Hindi, so English speakers will need to focus on the visual technique rather than the commentary. That said, the footage itself is the lesson.