# Steel

Part ID: 9.06a · Layer 9 (Building shell, site & construction) · child of 9.06

Structural and rebar steel, including data-center-specific and modular steel products, used to frame the building.

## Companies

| Company | Role | Confidence | Ownership | Ticker | Note |
|---|---|---|---|---|---|
| Cleveland-Cliffs | manufacturer | inferred | public | CLF |  |
| Commercial Metals | manufacturer | inferred | public | CMC |  |
| Gerdau | manufacturer | inferred | public | GGB |  |
| Nucor | manufacturer | inferred | public | NUE | data-center steel and modular |
| Steel Dynamics | manufacturer | inferred | public | STLD |  |
| Schuff/DBM | manufacturer | inferred | private |  |  |
| Zekelman/Atlas Tube | manufacturer | inferred | private |  |  |

Confidence tags: disclosed = company/filing statement; reported = trade press or partner list; inferred = taxonomy lead.