Hot Air Welding


FX50 | Large Flexible Ducting Welding Machine

The FX50 is specifically designed to weld flexible reinforced ducting. This machine will weld large reinforced tubes from 15″ to any diameter and can easily add a wear strip to the outside.
Best For:
  • Ducting
  • Tubes
Seam Type:
  • Channel Seam Channel Seam
  • Coverstrip Coverstrip
  • Overlap Overlap
  • Extrusion Beading Extrusion Beading
Features & Option

  • Hot air welding for continuous, automated manufacturing
  • Variable wire diameter and wire pitch for product versatility
  • Take away system for managing multiple ducting lengths
  • Heavy wire former, capable of bending diameters up to .250″ for an array of finished product
  • Fabric tension control for easier material handling

Technical Specs

Power Requirements

  • 208-240 Volts - Single/Three Phases - 80 Amp.

Air Requirements

  • 5cfm @ 120psi

Power Consumption

  • Approx. 19.2kW

Maximum Temperature

  • Hot Air: 730˚C (1,346˚F)
  • Hot Wedge: 450˚C (842˚F)

Throat Width

  • 3m (118")


  • Depends on Application


  • Depends on Application

Seam Width

  • 10 - 50mm (0.5- 2")

Welding Cycle

  • Up to 10m/min (30ft/min)*

* Depending on the application, the seam width and the type of material used

Our Training Process

Trust Miller Weldmaster to get your started!


Schedule Your Training

A Miller Weldmaster certified field service engineer will contact you to schedule installation and training at your facility.



Installation Preparation

We provide you with everything you need to know to get your team ready for installation and training.


STEP Three

Staff Training

Your staff will receive extensive instruction on welding equipment operation and maintenance and how to produce your product.


Machine Videos

  • Overview & How Tos
  • Training Videos
Weld Flexible Reinforced Ducting or Tubing
Weld Large Flexible Reinforced Ducting
Large Spiral Ducting Hot Air Welder

Service & Resolution Center

Our service team is dedicated to keeping our customer’s businesses running at optimal performance and assisting with any solutions you need. We are standing by to help you.

Contact Us Today!

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