The CRUXWELD DuoFlex 20K is a 2 in 1 spot and seam welder for sheet metal: a handheld gun that takes a single-point spot electrode or a roller seam electrode, powered by a 20 kVA resistance welder with a digital microcomputer controller.
Price, delivery & technical help — get a fast response.
Sheet-metal shops usually keep a spot welder for brackets and panels and a separate seam welder for tanks, trays and ducts. The DuoFlex 20K does both. The same handheld gun takes a single-point spot electrode for quick weld points, or a roller seam electrode that rolls along the joint for a continuous, leak-proof seam.
A 20 kVA thyristor-controlled DC power source sits under a digital microcomputer controller: set the current, weld time and pre- and post-weld time, choose continuous or pulsed welding, and save the program to repeat the same weld tomorrow.
Spot. One squeeze, one weld point — brackets, clips, panels and enclosures.
Seam. The copper roller keeps rolling and the weld points overlap into one continuous, leak-proof seam — tanks, trays, ducts and doors.
Tong spot (optional). The tong attachment grips the lap joint from both sides for double-sided spot welds — ask for it when you order.
Spot and roller seam electrodes come with the DuoFlex 20K; the tong spot attachment is optional.
See the full spot welder range. Spare roller wheels and electrode tips are available on request.
| PARAMETER | DUOFLEX 20K |
|---|---|
| Power | |
| Model | DuoFlex 20K |
| Welding method | Resistance welding: spot and roller seam |
| Rated capacity | 20 kVA |
| Input supply | AC 415 V ±15% |
| Frequency | 50 / 60 Hz |
| Rated primary current | 70 A |
| Secondary unload voltage | 7.6 – 12.8 V |
| Welding | |
| Maximum welding capacity | 1.8 + 1.8 mm |
| Welding current range | 1 – 2000 A |
| Welding time range | 1 – 999 ms |
| Pre-welding time | 0 – 999 ms, adjustable |
| Post-welding time | 0 – 999 ms, adjustable |
| Welding modes | Continuous, pulsed |
| Control | |
| Controller | Digital microcomputer controller |
| Display | Digital LCD |
| Memory | Stores multiple welding parameters |
| Build | |
| Insulation | H |
| Transformer cooling | Air cooled |
| Operating temperature | −10 °C to 50 °C |
| Earth cable / output cable | 3 m / 3 m |
| Controller weight | 2.5 kg |
| Gun + control cable weight | 8.5 kg |
| Dimensions (L × W × H) | 520 × 800 × 680 mm |
| Weight | Approx. 82 kg |
Specifications are subject to improvement without notice; the quotation and test certificate supplied with the machine are the governing documents. Warranty terms are stated on the quotation / invoice.
Load More
Do you sell replacement roller tips for your seam welders? If you do could you please tell me the cost of the tip and rollers. Thank you. God bless.