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Miller PipeWorx 400 Welding System

Miller Pipe Worx 400 Welding System

Top Features

  • DC CC CV
  • Designed Exclusively for Pipe Fabrication Shops
  • Quick Process Changeover
  • Simple and Easy to Operate

Simplified and optimized for pipe fabrication shop welding, the PipeWorx systems streamlined set-up with one touch welding, quick process changeover, and Pulsed and Modified Short-Arc MIG processes, makes training and turn-around times faster than ever before.

Product Details


Carbon Diameter: 5/16 in (7.9 mm)
Current Type: DC
Input Hz: 50 / 60 Hz
Input Phase: 3-Phase
Portability: Lift Eye (Standard)
Running Gear / Cart (Standard)
Input Voltage: 220/230/240 V
460/480 V
Max Open Circuit Voltage: 90 VDC
Weldable Metals: Mild Steel
Stainless Steel
Specialty Metals
Wire Feed Speed: 50 IPM - 780 IPM

Additional Features

Simple process setup

  • Clearly labeled controls in easy-to-understand welder terminology
  • Requires just a few basic steps to set up a new weld process, resulting in less training time and minimizing errors from incorrect setups
  • The front panel was designed by welders for welders. Only backlit controls are adjustable to eliminate confusion
  • Memory feature stores four programs for each selection: stick, DC TIG, and MIG (left and right side of feeder). Beneficial when using multiple procedures, multiple process parameters or multiple welders and eliminates the need to remember parameters

Quick process changeover

  • No need to manually switch polarity or cables and hoses between processes. Simply push a process selection button to choose a welding process. PipeWorx 'Quick-Select' technology automatically selects the welding process, the correct polarity, cable outputs and welding parameters
  • Quick process changeover eliminates set-up time for switching cables and gas hoses. Also, reduces the risk of weld reworks due to incorrect cable connection

Multiprocess machine

  • Weld processes are optimized to deliver superior arc performance and stability specifically for root pass, fill and cap pipe welding
  • Includes conventional stick, DC TIG (Lift-Arc™ or HF start), flux-cored and MIG welding processes
  • Also features the advanced RMD and pulsed MIG processes that deliver superior quality welds, increase productivity, and reduce rework and training

Streamlined system

  • Wind Tunnel Technology™ and Fan-On-Demand™ provide system protection in the dusty shop environment
  • Innovative cable and gun storage manages clutter for a cleaner, organized weld-cell area. Cables remain connected to the power source and do not need to be switched for the different welding processes
  • All system components have been selected to meet the needs of a pipe fabrication shop

All Product Resources

Options, Accessories and Related Equipment

Miller PipeWorx 400 Welding System

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Airgas, an Air Liquide company, is the nation's leading single-source supplier of gases, welding and safety products. Known locally nationwide, our distribution network serves more than one million customers of all sizes with a broad offering of top-quality products and unmatched expertise.