Worldwide manufacturer shortages are impacting delivery times. Lead times are more variable than other websites imply. We are a top distributor for Miller Welding; nobody will get you this faster. Call 1-844-682-0205.

Miller Pipeworx 400 Welding System 230/460 V #951381

Part Numbers: 951381
$24,659.00* Save $3,309.00

Included with your purchase ( ) :

See Bundle Details!

    Welding type:





    Material type:

    Mild Steel

    Mild Steel

    Stainless Steel

    Stainless Steel

    Power supply:

    220V 3 Phase

    220V 3 Phase



    • Multi-Process
    • Multi-Voltage
    • 3 Phase
    • 25 ft Lead
    • Torch Included
    • 3-Year Warranty

    Miller Pipeworx 400 Welding System 230/460 V #951381

    Simplified and optimized for pipe fabrication shop welding, the PipeWorx 400 Welding system provides one-touch welding, quick process changeover, and Pulsed and Modified Short-Arc MIG processes, making training and turn-around times faster than ever.

    Welders Supply offers this system at the lowest online price anywhere, and shipping is free within the continental United States on all orders over $300.


    • PipeWorx 400 Power Source, 230/460V
    • PipeWorx Dual Feeder with drive rolls (300366) 
    • Two 15 ft (4.6 m) PipeWorx 300A MIG Guns (195400) 
    • Side-mount Cable Hangers
    • Cable Kit with 25ft. (7.6m) Work Sense Lead (300367) 
    • Running Gear with Dual Cylinder Rack (300368)  

    Simple Process Setup

    • Clearly labeled controls in easy-to-understand welder terminology.
    • It requires just a few basic steps to set up a new weld process, resulting in less training time and fewer 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 parameter.
    • 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.

    PipeWorx ROI Calculator

    The PipeWorx ROI calculators are designed to help you determine your unique return on investment and payback based on your shop and the savings the PipeWorx Welding System delivers.

    Get welding machinesmulti-process welders, welding helmets, and other welding tools from Welders Supply.

    Other Versions of the Miller Pipeworx 400:


    • Flux Cored (FCAW)
    • MIG (GMAW)
    • Pulsed MIG (GMAW-P)
    • RMD
    • Stick (SMAW)
    • TIG DC (GTAW-DC)
    • Air Carbon Arc Cutting and Gouging (CAC-A)

    Pipeworx 400 Welding System 230/460 V

    Industries Interests Construction
    High Purity Processing
    Mechanical Contracting
    Pipe Fabrication / Construction
    Pressure Vessel
    Weldable Metals Steel
    Stainless Steel
    Specialty Metals
    Carbon Diameter 5/16 in (7.9 mm)
    Input Voltage 220/230/240 V
    460/480 V
    Input Phase 3-Phase
    Input Hz 50 / 60 Hz
    Current Type DC
    Max Open Circuit Voltage 90 VDC
    Wire Feed Speed 50 IPM - 780 IPM
    Warranty Miller's True Blue Warranty
    Portability Lift Eye (Standard)
    Running Gear / Cart (Standard)
    Weld Output CC / CV


    Height: 29.00 Inches
    Width: 40.00 Inches
    Length: 48.00 Inches
    Weight: 501 Lb(s) 0 Oz

    Product Questions and Answers

    Q - Can a spool gun be used on this machine? A - No a spool gun cannot be used for the Pipeworx 400 Welding system.
    Q - Is there a single feeder available for this system? A - No, a single feeder cannot be used with this system.

    Have a question about this product? Submit your question using the form below

    Related Products

    Miller Syncrowave Series Heavy Duty Foot Control #194744
    Foot Control, Heavy Duty, 14-pin plug #194744
    Miller Blank SD Memory Card 301080
    Miller Blank SD Memory Card #301080
    250A 75SX MIG Gun Dual Schedule Switch #071833
    Miller Dual Schedule Switch, DSS-9, 15 ft #071833
    PipeWorx Composite Cable Kit 25 ft. #300454
    Miller PipeWorx Composite Cable Kit 25 ft. #300454
    Miller PipeWorx Volt Sense Lead 25 ft. #300461
    PipeWorx Volt Sense Lead 50 ft. #300462
    Miller PipeWorx Volt Sense Lead 50 ft. #300462
    Miller Spool Cover (Right Side/Single or Dual) #090389
    Miller Spool Cover (Right Side/Single or Dual) #090389
    Left side/single or dual 60lb reel cover #195412
    Miller Welding Reel Cover #195412
    Wire Feeder Spool Cover for 20 and 40 welding machines #057607
    Miller Wire Feeder Spool Cover #057607
    Replacement 60LB Miller Wire Reel Assembly for Sale #108008
    Miller Wire Reel Assembly #108008
    15ft Miller PipeWorx Welding Machine 250 Amp Gun #195399
    PipeWorx 250 A 15 Ft MIG Gun #195399
    15ft 300 Amp PipeWorx Welding Gun #195400
    PipeWorx 300 A 15 Ft MIG Gun #195400
    Pipeworx Accessories Kit for Dual Feeder #300568
    Pipeworx Accessories Kit for Dual Feeder #300568
    PipeWorx Composite Cable Kit 50 ft. Part #300456
    PipeWorx Composite Cable Kit 50 ft. #300456
    Miller PipeWorx MIG or TIG Welding Machine w/ Cooling System #300370
    PipeWorx Cooler #300370
    Dual Bench-Style Feeder for Miller PipeWorx Welding Machines
    PipeWorx Dual Bench Feeder #300366
    25ft Cable Kit for Miller PipeWorx Welding Machine #300367
    PipeWorx Feeder Cable Kit #300367
    PipeWorx Foot Control Bracket #300676
    PipeWorx Remote Feeder Interface #300597
    Miller PipeWorx Welding Machine Running Gear Includes Gas Cylinder Rack and Handles #300368
    PipeWorx Running Gear #300368
    Miller Single Bench-Style Wire Feeder for PipeWorx Welding Machine
    PipeWorx Single Bench Feeder #300365
    Out of Stock
    Pushbutton Fingertip Control, 2 Button, 14-pin Plug Miller Welding #300666
    Pushbutton Fingertip Control, 2 Button, 14-pin Plug #300666

    Competitive Products

    Miller Multimatic 220 AC/DC Multiprocess welder #907757 Miller Multimatic 220 AC/DC
    Miller Multimatic 220 AC/DC
    Thermal Arc Fabricator 3 IN 1 252I Portable System w/Dual Cyl cart and Spoolgun Part#w1004403
    Thermal Arc Fabricator 3" 1 252I Portable w/Dual Cyl cart+Spoolgun
    Out of Stock

    Be the first to know about upcoming specials!