For a small fabrication shop in Northeast India, the Shakti MMA 250G inverter welder is the best starting machine — it handles 6 mm MS plate, runs on a standard single-phase supply, and tolerates the generator power cuts that are daily reality across Assam and the Northeast. The counter team at Multi Trade Combines on AT Road, Guwahati will help you match the exact model to your electrode size, material thickness and power situation.
Multi Trade Combines is an authorised Shakti dealer in Guwahati. The MMA 250G is an IGBT inverter welder — meaning it is light, energy-efficient, and generator-compatible. At 250A output it handles most structural fabrication: gates, grilles, staircase stringers, machinery frames and agricultural equipment. It accepts standard ISI electrodes from 2 mm to 5 mm diameter. The Shakti MMA 250G is the most commonly requested entry MMA machine at our Guwahati counter — and most shops that start with it run it for years without issue.
For heavier structural work or shops that eventually want to run 6 mm electrodes on thick plate, we also stock higher-amperage ESAB inverter machines — ask the counter team for a comparison quote.
| Process | MMA (Stick) | MIG/MAG | TIG |
|---|---|
| Electrode | Coated stick electrode | Wire spool + shielding gas | Tungsten rod + filler rod |
| Best for | Structural mild steel, site work, thick sections | Production runs, clean sheet metal | Stainless, aluminium, precision joints |
| Indoor/outdoor | Both — no shielding gas needed | Mostly indoor — wind affects gas shield | Indoor |
| Skill needed | Medium | Medium | High |
| Maintenance | Minimal | Wire feed + gas regulators | Higher — electrode holder, collet, gas system |
| Recommendation | Start here for most small shops | Add once production volume justifies it | Only when customer demand requires it |
Before buying, answer these three questions at the counter:
For buying guides and full spec sheets, see the welding machines catalogue and the how-to-choose guide.
A 200–250A MMA (stick) inverter welder covers the majority of small shop work: MS flats, angles, channels and plates up to 8–10 mm. A 250A machine lets you run 4 mm and 5 mm electrodes comfortably for structural joints. If you plan to weld thicker sections (12 mm+), step up to a 300–400A machine. For thin sheet (below 2 mm), MIG or TIG is more appropriate than MMA.
Start with MMA (stick welding). It is the most versatile — works outdoors, handles mill scale and slightly rusty material, runs on a wide range of electrode types, and the machine itself is robust and low-maintenance. MIG welding (GMAW) is faster for production runs on clean material, but the wire, gas and gun add ongoing costs and complexity that a small shop does not need at first. TIG is for precision stainless and aluminium — come to that when there is demand.
Yes — but only with an IGBT inverter welder, not an old transformer-type machine. Inverter welders (like the Shakti MMA 250G) are designed to handle the voltage variation and impure sine wave output of a generator. A 200A inverter welder drawing approximately 4–5 kVA needs a generator of at least 7.5 kVA with AVR for smooth, stable arcing. The counter team at MTC can advise on generator pairing.