Heavy welded vessels for medium and large power transformers — plate-wall tanks with radiator headers or integral cooling fins, stiffened for vacuum and pressure, with covers, conservator interfaces and lifting and jacking provisions built to print.
A power transformer tank is heavy plate — walls, floor and cover stiffened with channels and beams — that has to hold vacuum during oil filling, hold positive pressure in service, carry a core-and-coil weighing tens of tons without distorting, and present radiator, bushing and conservator interfaces exactly where the drawing puts them. Shrinkage from long structural welds is the enemy; fixturing, weld sequencing and post-weld dimensional checks are how it's controlled.
FabTek fabricates power transformer tanks and large welded vessels to OEM print at our Hazlehurst, Mississippi plants: plate processed on robotic plasma and waterjet, walls and stiffeners fitted and welded in sequence to AWS D1.1 by certified welders, radiator headers and flanges or integral cooling fins installed to print, covers and conservator interfaces machined flat where specified, and the whole vessel leak-tested, with pressure and vacuum testing to the OEM's requirement, before blast and finish. Overhead-crane capacity at our Terry site handles the heavy and oversized work. We build the tank; the transformer stays with the OEM.
Plate-wall tanks with radiator headers, valves and mounting for detachable radiator banks.
Tanks with integral cooling fins for medium power units.
Bolted covers, conservator vessels and piping interfaces, bushing turrets and cable boxes. See tank covers & conservators.
Skid bases, jacking pads, lifting lugs, transport bracing and anchoring provisions.
Medium and large power transformers for utilities, generation, industrial substations and the on-site substations behind data center campuses; GSU and station-class units; remanufacturers rebuilding power units.
| Construction | Welded carbon-steel plate walls, floor and cover; structural stiffening for vacuum and pressure |
|---|---|
| Plate | ASTM A36 / A572, thickness per design |
| Sizes / weights | Confirmed at quote against the drawing; overhead-crane capacity for heavy and oversized vessels |
| Testing | Leak test and dimensional inspection on every tank; pressure and vacuum testing to the OEM's requirement |
| Welding | AWS D1.1, certified welders, documented inspection |
| Finish | Blast to SSPC-SP profile; powder coat in-house, or the OEM's specified coating system |
| Handling | Overhead-crane capacity at our Terry, Mississippi site |
| Also specified as | Power transformer tank, transformer main tank, welded transformer vessel, fin-wall power tank, radiator transformer tank, GSU tank |
Representative capabilities — exact ranges, ratings, and finishes are confirmed per project. Send drawings for a firm quote.
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.
Reserved-line capacity and the automation to grow with your volume.
Yes — welded plate-wall power tanks, radiator-mount and fin-wall, with covers and conservator interfaces, fabricated to OEM print and pressure-tested in Hazlehurst, Mississippi.
Send the drawing — envelope and weight are confirmed at quote, and our Terry site's overhead cranes handle the heavy and oversized work.
No — we install radiator headers, flanges and mounting to print; radiators are supplied by the OEM or its radiator vendor.
Yes — covers, conservators, turrets and accessory metalwork from the same floor.
Explore related lines: Transformer tanks · Corrugated-wall tanks · Round & pole-mount tanks · Transformer OEMs
Further reading: Conservators, covers & tank accessories · How to qualify a contract tank fabricator · Material certs & heat numbers
Send the tank drawings and test requirements — we'll confirm envelope and quote fabrication, testing and finish.