America’s Most Complete
Data Center Metals Supplier
One relationship. Every metal your project needs. O’Neal Industries brings nine specialized companies, 68 U.S. locations, and over 100 years of industrial expertise to hyperscale, colocation, and enterprise data center construction.
WHY O’NEAL INDUSTRIES
The Only Metals Network Built for the Data Center Economy
O’Neal Industries is America’s largest family-owned network of metal service centers and manufacturing businesses — and we’re built for data center demand. As AI infrastructure investment drives a historic construction boom, data center builders need a metals partner with the scale, depth, and reliability to keep pace.
Where other suppliers cover a slice of the spectrum, ONI covers it all. Our operating companies supply everything from structural carbon steel and alloy plate for building frameworks to stainless steel cooling pipe, aluminum cable trays, specialty nickel alloys, and custom-fabricated enclosures and skids — under one trusted relationship.
Nationwide Supply Chain Resilience
One Relationship. All Nine Companies.
Domestic sourcing options. Full traceability.
What We Supply
Metals for Every Data Center Application
From foundation to cooling loop, our companies supply the metals and fabricated components that make mission-critical facilities possible.
🏗️ Structural Steel & Building Systems
Carbon and alloy steel plate, beam, channel, and angle for the building shell, equipment platforms, raised floor support systems, and mezzanine structures.
Carbon Steel Plate Structural Shapes Alloy Steel Leeco Steel O’Neal Steel❄️ Liquid Cooling & Chilled Water Systems
Stainless steel 304/316 and nickel alloy pipe, tube, and fittings for liquid cooling loops, chilled water distribution, and advanced thermal management.
⚡️ Cable Trays, Ladder Rack & Containment
Aluminum and galvanized steel for cable tray systems, ladder rack, wire containment, and overhead busway supports across the entire campus footprint.
Aluminum Galvanized Steel O’Neal Steel TW Metals STP🔒 Server Racks, Cabinets & Enclosures
Cold-rolled steel, aluminum sheet, and stainless for server cabinet frames, equipment enclosures, and modular rack systems requiring precision tolerances.
Cold Rolled Steel Aluminum Sheet Stainless Sheet O’Neal Steel TW Metals Skilcraft STP Slice of Stainless🔋 Generator, UPS & Power Infrastructure
Heavy carbon and alloy plate for generator pads and equipment bases, plus fabricated steel enclosures, UPS housings, and switchgear infrastructure.
💨 HVAC, Air Handling & Mechanical Systems
Stainless and aluminum for HVAC ducting, air handler frames, and mechanical infrastructure requiring corrosion resistance and dimensional accuracy.
Stainless Sheet Aluminum Extrusion O’Neal Steel TW Metals STP💧 Specialty Alloys for Advanced Cooling
High-performance nickel alloys (Inconel, Hastelloy, Monel), titanium, and cobalt for next-generation direct liquid cooling, immersion cooling, and heat exchanger applications.
Inconel Hastelloy Titanium TW Metals United Performance Metals Slice of Stainless Fabrisonic⚙️ Custom Fabricated Components & Sub-Assemblies
Engineered-to-spec steel components, modular assemblies, kitted packages, and weldments for contractors and OEMs requiring long-term, repetitive production.
Weldments Sub-Assemblies Kitting O’Neal Mfg Services Skilcraft🛡️ Fire Suppression & Safety Systems
Stainless steel pipe, tube, and fittings for fire suppression systems, plus safety grating, stair treads, and handrail systems throughout the facility.
Stainless Pipe Safety Grating Alloy Steel O’Neal Steel TW Metals STPOur Family of Companies
Nine Specialists. One Powerful Network.
Each ONI company brings deep expertise in its metal category. Together, they cover every material need a data center project will encounter — from structural steel to precision specialty alloys and complex sheet metal fabrication.
Fabrisonic
An advanced manufacturing company specializing in Ultrasonic Additive Manufacturing® (UAM)—a solid‑state metal additive process that enables the fabrication of complex, multi‑material components with embedded functionality.
Data Center Roles
→ Direct-to-chip cold plates
→ 3D-printed metal heat exchangers
→ Sensor-embedded thermal components
Leeco Steel
Extensive inventory of carbon and alloy plate for heavy structural applications, plus international metals supply capability via the Leeco Trading Division for multi-campus and global data center programs.
Data Center Roles
→ Generator pads & heavy equipment bases
→ Large-scale structural plate fabrication
→ International campus supply (MOQ 500 mt)
O’Neal Manufacturing Services
Custom fabricated steel components, sub-assemblies, and weldments for data center operators and contractors requiring long-term, repetitive production of precision infrastructure components.
Data Center Roles
→ Custom generator skids & UPS enclosures
→ Cable tray assemblies & modular kits
→ OEM component production programs
O’Neal Steel
Distributor of carbon and alloy steel, aluminum, and stainless in plate, sheet, pipe, tube, bars, structural shapes, and safety products — the backbone of data center structural systems.
Data Center Roles
→ Structural frameworks & building steel
→ Raised floor support systems
→ Safety grating, stair treads & handrail
Skilcraft
Complex sheet metal fabrication and assembly specialist with 60 years of precision manufacturing experience. Serving aerospace, defense, power generation, and alternative energy — now bringing that same precision to data center infrastructure.
Data Center Roles
→ Precision enclosures & server chassis
→ Laser-cut brackets, panels & rack components
→ Complex welded sheet metal assemblies
Slice of Stainless
A specialty metals service center offering stainless steel, nickel alloys, and titanium with same-day shipment capability. Ideal for data center cooling, fire suppression, and corrosion-resistant applications requiring fast-turn material supply.
Data Center Roles
→ Stainless, nickel alloy & titanium
→ Corrosion-resistant cooling materials
→ Same-day shipment
Stainless Tubular Products
Specializing in perforated metal, wire mesh, expanded metal, and safety grating solutions used for airflow management, equipment enclosures, cable containment, and facility access systems.
Data Center Roles
→ Equipment enclosure and airflow management panels
→ Cable containment and support systems
→ Custom fabricated metal assemblies
TW Metals
Premier supplier of stainless steel, aluminum, nickel, titanium, carbon and alloy steel in tube, pipe, bar, sheet, plate, and extrusions — with the precision tolerances data center cooling and enclosure applications demand.
Data Center Roles
→ Liquid cooling pipe & chilled water systems
→ Cable trays & management systems
→ Server enclosures & rack hardware
United Performance Metals
Specialty metal solutions center offering nickel, titanium, stainless, cobalt, PRODEC®, and aluminum in sheet, coil, strip, bar, plate, and near-net shapes for the most demanding data center cooling applications.
Data Center Roles
→ Advanced liquid & immersion cooling alloys
→ High-performance heat exchanger material
→ Precision server rack hardware
National Footprint
Supply Chain Resilience Where You Build
Data center campuses are being built at record pace in Northern Virginia, Phoenix, Dallas, Columbus, and across the Sun Belt. No matter where your project is located, an ONI company has a stocking location nearby.
With 68 U.S. locations and deep mill relationships, we provide the inventory depth and geographic redundancy that keeps materials flowing when tariff disruptions, port delays, or market volatility would stop a single-source supplier cold.
68
U.S. Stocking & Manufacturing Locations
85+
Locations Worldwide
100%
Traceable, documented supply
Why Data Center Builders Choose ONI
Built for the Demands of Mission-Critical Infrastructure
Data center schedules don’t slip. Power doesn’t fail. And your data center metals supplier shouldn’t either.
Scale for Hyperscale Projects
A single hyperscale AI data center can require roughly 20,000 tons of steel, depending on scope and design. ONI’s combined inventory, purchasing power, and multi-site distribution make us one of the few metals networks capable of serving hyperscale builds at full scale — on schedule.
Vendor Consolidation Without Sacrifice
Procurement teams managing data center builds deal with dozens of material suppliers. ONI’s operating companies cover structural, pipe, specialty alloys, aluminum, and fabrication under one relationship — fewer POs, fewer calls, fewer risks.
Documentation & Traceability
Full Mill Test Reports (MTRs), ASTM compliance, and lot traceability on all orders. We apply the same documentation rigor to data center supply that we use for naval and aerospace programs.
Tariff-Resilient Domestic Supply
ONI’s network includes metal service centers and component manufacturers with strong domestic sourcing relationships. When tariffs on steel and aluminum spike, our domestic sourcing and geographic depth protect your pricing and lead times.
Value-Added Processing On-Site
Laser, plasma, and oxyfuel cutting. Forming and machining. Welding and assembly. Kitting for just-in-time delivery. We reduce your fabrication steps and compress your supply chain timeline at the point of need.
Preferred Supplier Programs Available
For hyperscale operators and multi-campus builders, ONI companies offer preferred supplier agreements, blanket purchase orders, and index-linked pricing structures to bring predictability to your materials budget.
Who We Serve
Built for Every Tier of the Data Center Market
Hyperscale Operators
Microsoft, Amazon, Google, Meta, Oracle, and other hyperscalers building multi-campus AI infrastructure at scale. ONI’s 68 locations and multi-company depth make us the right partner when the project is measured in megawatts and the steel order is measured in thousands of tons.
Colocation & Edge Providers
Equinix, Digital Realty, Iron Mountain, QTS, and other colo operators expanding U.S. campus footprints. Consistent material supply across multiple concurrent builds — from structural steel to precision cooling systems.
General Contractors & MEP Subs
Mortenson, Turner, Holder, DPR, and Skanska — the contractors who build the campuses. Bring ONI in during preconstruction to confirm lead times, material availability, and pricing before your bid is locked. ONI is built to be your supply chain backbone from concept to commissioning.
Frequently Asked Questions
Data Center Metals Supplier — Common Questions
What metals does O’Neal Industries supply for data center construction?
We supply structural carbon and alloy steel, stainless steel (304, 316, duplex), aluminum plate and extrusions, nickel alloys (Inconel, Hastelloy, Monel), titanium, and cobalt alloys — covering everything from building frameworks to advanced cooling pipe. See all products here.
Can you supply steel for a hyperscale data center project?
Yes. With 68 U.S. stocking and manufacturing locations and nine operating companies, ONI has the scale, inventory depth, and national distribution capability to supply hyperscale campuses — including the roughly 20,000 tons of steel a single AI data center may require.
What stainless steel products are available for liquid cooling systems?
Through TW Metals and United Performance Metals, we supply stainless 304 and 316 pipe, tube, and fittings for liquid cooling loops, plus high-performance nickel alloys (Inconel, Hastelloy, Monel) for direct liquid cooling and immersion cooling applications.
Do you offer fabricated components, not just raw metal?
Yes. O’Neal Manufacturing Services provides custom fabricated steel components including generator skids, UPS and battery enclosures, cable tray assemblies, and modular infrastructure sub-assemblies — engineered to spec for long-term repeat production programs.
Can ONI serve multi-site or global data center campus programs?
Yes. Leeco Steel’s Trading Division serves international customers (MOQ 500 mt), and ONI’s 85+ locations worldwide support multi-campus programs across multiple regions. Preferred supplier agreements are available for portfolio-level procurement.
What documentation and traceability do you provide?
All orders include full Mill Test Reports (MTRs), ASTM compliance documentation, and lot traceability. We apply the same rigorous documentation standards to data center supply that we use for naval shipbuilding and aerospace programs.
Ready to Source?
Your Data Center Project Deserves
America’s Strongest Metals Network
Whether you’re sourcing structural steel for a new campus, stainless cooling pipe for a next-gen liquid cooling system, or custom-fabricated enclosures at scale — ONI has the companies, the locations, and the experience to deliver.
✓ 68 U.S. Locations
✓ 8 Specialized Companies
✓ 100+ Years Experience
✓ Traceable, documented supply
✓ MTRs Available on All Orders