Spot Welder Manufacturer,Supplier and Exporter in India
Product Code : EL-WT-13012
Jlab Export is a leading Spot Welder Manufacturer,and suppliers in India
A portable spot welder joins two overlapped steel sheets one spot at a time. Current passes between the electrode tips while they squeeze the sheets together, and the heat fuses a small nugget at the joint. This one runs on 220 V, 50 Hz, is rated 2.5 kVA at 50% duty cycle and has a 6 in throat.
Specifications
| Type | Portable spot welder |
| Supply | 220 V, 50 Hz |
| Rating | 2.5 kVA at 50% duty cycle |
| Throat depth | 6 in |
| Weldable sheet | Uncoated mild steel, galvanized steel, stainless steel |
| Minimum order quantity | 1 unit |
| Dispatch time | Usually 14–18 working days |
| Manufacturer | JLab (Jain Laboratory Instruments Pvt Ltd), Ambala, India |
How a Spot Weld Forms
The heat at the joint follows H = I²Rt: current squared, times resistance, times time. The highest resistance in the circuit is the contact between the two sheets, so that is where the metal melts. The tips keep their pressure for a moment after the current stops, and the nugget sets under load.
Sheet Metal Practicals with the Spot Welder
Sheet metal trainees cut test strips from Galvanized Steel Sheet with Cutting Aviation Snips, overlap them and place a row of spots. For a peel test, one strip is gripped in a Bench Vice and the other is rolled back. A sound weld tears a round button of metal out of one sheet. Teachers then repeat the test on uncoated mild steel strips and compare the two.
Frequently Asked Questions
Which metals can it weld?
Uncoated mild steel, galvanized steel and stainless steel sheet, overlapped. Aluminium and copper are not on the list, because their low resistance calls for far higher current.
What does the 6 in throat depth mean?
It is the distance from the electrode tips back to the body of the welder. A spot can sit up to 6 in from the edge of the sheet. Further in, the arms will not reach.
What does 2.5 kVA at 50% duty cycle mean?
The welder is rated 2.5 kVA. At 50% duty cycle it can weld for half of any working period at that rating and must rest for the other half. Space out the spots on a long run.
How do I know a spot weld is good?
Peel a sample apart. A good weld pulls a round button of metal out of one sheet. If the sheets separate cleanly at the joint, the weld got too little heat or the sheet surfaces were dirty or oily.
Can galvanized sheet be spot welded?
Yes, it is on the list. The zinc coating burns off at the spot and gives off white fumes, so weld it with good ventilation. Zinc also builds up on the tips, which then need dressing more often.
Other Resistance Welding Machines
- Spot Welding Machine (floor type, foot operated)
- Resistance Welding Machine (pneumatic clamping)
- Spot Welding Machine (AC and MFDC versions)
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Last updated: 6 November 2026