Big Blue® 400 PipePro® Engine-Driven Welder | MillerWelds

Big Blue® 400 PipePro® (Mitsubishi) Stainless Steel w/Wireless Interface Control

Next-generation, rugged, low-speed diesel engine driven welder designed for the transmission pipeline contractor.

Mitsubishi Stainless, Wireless Interface Control

Mitsubishi Blue, Wireless Interface Control

CAT Stainless, Wireless Interface Control

CAT Blue, Wireless Interface Control

Get Total Control — Where You Work: Wireless Interface Control


What's Included

  • Wireless Interface Control remote
Wireless Interface Control
Elevate your performance and get full control of your machine in the palm of your hand, from wherever you are on the jobsite. With wireless interface control, you can: 
  • Change welding processes
  • Adjust parameters
  • Select and save preset programs
  • Turn the machine on/off
  • View service reminders 
  • And more! 
Extend time between fill ups and maintenance intervals while eliminating the need to go back to your machine to make adjustments.
  Learn More
Heavy-Duty Low-Speed Mitsubishi S4L2 Industrial Diesel Engine
Used in industrial applications around the world, the S4L2 is designed to run 10,000 hours before major overhaul. Backed by worldwide support and service.
ArcReach® Technology
ArcReach technology uses existing weld cables to communicate process adjustment commands back to the engine-driven welder. With an ArcReach system, amperage & voltage are conveniently located at the operator's fingertips - not back at the power source.   Learn More
Dynamic DIG™
Unlike conventional DIG that provides a preset amount of short-clearing current, Miller’s proprietary Dynamic DIG works on a time-based algorithm that automatically adjusts the amount of current required to clear a short. What does this mean? A smoother more consistent arc that can be tailored to match application, material, fit-up, and welder technique.   Learn More
Other Standard Features
Digital preset weld meters, output contactor control, and automatic idle.
Programmable Weld Settings
Multiprocess joints and parameter changes between weld passes require setup time for optimal welding conditions. With Wireless Interface Control, you can save up to four different weld programs. Easily select any program with the push of a button, saving you time, effort and adding consistency to your setup between welds.
Stainless Steel Enclosure
Standard stainless steel enclosure enhances durability & adds to the look and resale of the machine.
Line-X® Top Cover
Workbench tough top cover provides superior impact, corrosion and abrasion protection.
Industrial USB Port
Quickly upload the latest software and download machine log files to retrieve in-depth information such as diagnostics and machine statistics.   Learn More
Fuel Savings
When your engine-driven welder is far away, it's time-consuming to walk back to turn it off, so it ends up running all day. Use Wireless Interface Control to instantly turn your machine off when needed, saving fuel and money.
ArcReach Heater Compatibility
Take charge of your field preheat and bakeout applications up to 600 degrees Fahrenheit (315°C). This system uses induction heating to generate heat in workpieces, so welders can do their own preheating quickly and safely. A part of the ArcReach technology platform, the ArcReach Heater is an accessory for select ArcReach welding power sources.   Learn More

Not Included

  • Weld leads



Regulated Metal Deposition (RMD)

General Specifications

Title Big Blue® 400 PipePro® (Mitsubishi) Stainless Steel w/Wireless Interface Control
Industries Interests Pipeline
Amperage 20 A - 400 A
Rated Carbon Diameter 1/4 in (6.4 mm)
Current Type DC
Max Open Circuit Voltage 85 VDC
Cold Weather Starting Aids Engine Block Heater
Engine Brand Mitsubishi
Engine Compliance T4F
Engine Idle Speed 1500 RPM
Engine Weld Speed 1800 RPM
Fuel Tank Size 11.5 gal.
Fuel Type Diesel
Horsepower 24.7 hp
Weld Output CC/CV
Rated Output 300 A at 32 VDC, 350 A at 27 VDC, 400 A at 24 VDC
Single Phase Auxiliary Continuous Power 10000 W
Single Phase Auxiliary Peak Power 12000 W
Sound Rating Idle: 68.7 dB (93 Lwa) / Weld: 72.1 dB (97 Lwa)
Net Width 26.25 in
Net Height 32 in
Net Length 56 in
Net Weight 993 lbs




Reviews & Ratings

Question & Answers