Products
Custom Transformer Tanks & Welded Vessels
Custom transformer tanks and large welded vessels — corrugated-wall, fin-wall power tanks, cylindrical, conservator, pad-mount and pole-mount — built to print on dedicated production lines.
Custom transformer tanks and large welded vessels — corrugated-wall, fin-wall power tanks, cylindrical, conservator, pad-mount and pole-mount — built to print on dedicated production lines.
FabTek is a custom transformer tank manufacturer for OEMs and utilities. We fabricate transformer tanks and large welded vessels — built to your drawings with AWS-certified welding and finished in-house. We build the tank and enclosure, not the energized transformer.
For transformer OEMs and utilities, single-source fabrication means tighter tolerances, leak-tested welds, and schedules you can plan around. Every tank is a domestic build under an ISO 9001:2015 quality system in Hazlehurst, Mississippi.
Welded rectangular distribution and power tanks with corrugated side walls or integral radiator cooling fins.
Tube-cooled cylindrical tanks, oil conservator vessels, and sealed hermetic assemblies.
Distribution transformer tank enclosures for pad-mount and pole-mount units, powder-coated to utility spec.
Send drawings or a spec — we fabricate to print.
Transformer tanks contain the core, coils, and insulating fluid of a transformer, and must hold up to pressure, heat, and decades of outdoor exposure without leaking.
FabTek welds transformer tanks to spec for OEMs and utilities, pairing AWS-certified welding with the finishing and testing that utility-grade apparatus demands. These tanks serve distribution and power transformer programs across investor-owned utilities, public power, and the fast-growing data center market.
Most fabricators run tanks as spot work, so your recurring volume competes with every other job on the floor and your production plan is only as firm as their backlog allows. For a recurring tank program we stand up a dedicated production line instead: the same welders, the same fixtures, the same coating process, with monthly capacity set aside against your forecast.
We reserve line hours against your release schedule, so the tanks you need in March are planned in January rather than quoted in February.
Weld fixtures and forming setups for your tank stay tooled and stored. Repeat runs skip setup, and the hundredth tank matches the first.
One AWS-certified crew owns your program. Leak-test results and weld records come from people who already know where your tank is fussy.
Plate cutting, forming, welding, and powder coat all happen on our floor. Nothing leaves for paint, so finish and schedule stay ours to hold.
Running a recurring tank program? Tell us the annual volume and release cadence and we'll come back with a line plan, not just a unit price.
| Materials | Carbon-steel plate; stainless available |
|---|---|
| Tank types | Rectangular power tanks, corrugated-wall, fin-wall, cylindrical, tube-cooled, conservator, sealed hermetic, pad-mount and pole-mount |
| Application | Distribution and power transformers |
| Monthly capacity | 1,000s of tanks per month across four production sites |
| Lead time | 30–45 days depending on scoped materials |
| Testing | Leak-tested welds; pressure-tested to specification |
| Finish | In-house powder coat and coatings to spec |
| Welding | AWS-certified (GMAW / GTAW) |
| Quality & origin | ISO 9001:2015, OSHA-compliant, made in the U.S.A. |
| Engineering | Build-to-print and custom-spec |
| Also specified as | Transformer tank, transformer oil tank, welded vessel, tank enclosure, corrugated-wall tank, conservator tank |
Representative capabilities — exact ranges, ratings, and finishes are confirmed per project. Send drawings for a firm quote.
Each build moves through our own shop end to end — no outsourced steps, including paint. That's how we hold tolerances and finish quality at volume.
Fabrication runs through our laser cutting, CNC press-brake forming, robotic plasma cutting, welding, and powder-coat finishing — see our full equipment and capabilities for the machines behind each step.
Built at four production sites in Hazlehurst, Mississippi.
ISO 9001:2015 quality management, AWS-certified welding, OSHA-compliant facilities.
In-house powder-coat backed by an IEEE 2000-hour salt-spray certification.
25+ years of fabrication experience and the automation to grow with your volume.
Yes. We fabricate build-to-print and custom-spec transformer tanks and welded vessels, with AWS-certified welding.
FabTek fabricates the tank, enclosure, and welded vessel — not the energized transformer.
Carbon-steel plate in most cases, with stainless available where the spec calls for it. Wall thickness, stiffener design, and cooling geometry all follow your drawings. Every weld is leak-tested and pressure-tested to specification.
Surface area. A transformer’s losses turn into heat that has to leave the oil, and corrugated side walls, radiator fin panels, and wrap-around cooling tubes all add cooling surface without adding footprint. Which one you specify depends on rating, ambient, and mounting.
All tanks are manufactured in the United States at our facilities in Hazlehurst, Mississippi.
Explore related lines: Coil & winding assemblies · Transformer cabinets & NEMA enclosures · Contract fabrication for transformer OEMs · See all products
Further reading: Welded vs. bolted transformer tanks · How a transformer works · Equipment & capabilities
Send drawings or a scope and we'll come back with pricing, lead time, and a capacity plan for the volume you're running.
