907382 - Miller PipeWorx 400 Multi-Process Pipe Welder Power Source

Designed by Welders, For Welders

The Miller PipeWorx 400 Power Source isn't just another welding machine; it's a system built to solve the real-world frustrations of pipe welders. If you've ever wasted time tracing cables, swapping leads, or double-checking polarity before striking an arc, this machine is the answer. Miller collaborated directly with professional pipe welders to design a front panel that makes sense. The controls are clearly labeled in terminology you use every day, and the interface is streamlined to keep you focused on the puddle, not the manual.

Seamless Process Switching

Imagine moving from a TIG root pass to a Flux-Cored fill pass without leaving your booth or unscrewing a single cable. With the PipeWorx 400's Quick-Select technology, that convenience is a reality. The machine keeps your cables connected and ready. Simply press the button for the process you need—MIG, Stick, or TIG—and the machine handles the rest, automatically switching polarity and recalling your last settings. This means more arc-on time and less time fiddling with setup, helping you get the job done faster and with less hassle.

Master the Root Pass

Root passes on open-root pipe are notoriously difficult and critical for weld integrity. The PipeWorx 400 features Miller's exclusive RMD (Regulated Metal Deposition) technology, which makes laying a perfect root pass significantly easier. RMD anticipates and controls the short circuit, giving you a calm, stable arc that bridges gaps easily and wets out the sidewalls smoothly. Whether you are a seasoned veteran or training new hands, RMD helps produce consistent, high-quality roots with less spatter and rework.

Built for the Shop

Your shop environment can be tough on equipment, but the PipeWorx 400 is tougher. It features a smart cooling system that keeps dust and grime out of the machine's guts, extending its life and reliability. The memory buttons let you save your favorite settings for different pipe schedules, so you can jump between jobs with confidence. Invest in a system that respects your craft and boosts your productivity—choose the Miller PipeWorx 400.