Exhibit 21.1
SUBSIDIARIES OF WORTHINGTON STEEL, INC.
The following is a list of the subsidiaries, direct and indirect, of Worthington Steel, Inc. as of July 30, 2026. The names of indirectly-owned subsidiaries are indented under the names of their respective immediate parents:
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| Place of Organization | |||
Cleveland Pickling, Inc. | Delaware | ||||||||
WSMX Holdings, LLC (1) | Ohio | ||||||||
| Worthington Steel Mexico, S.A. de C.V. (1) | Mexico | |||||||
Tempel Steel Company, LLC | Illinois | ||||||||
| T do B, LLC | Illinois | |||||||
| Tempel Canada Company | Canada | |||||||
| Tempel de Mexico, S. de R.L. de C.V. | Mexico | |||||||
| Temple HK Holding Co., Limited | Hong Kong | |||||||
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| Tempel Changzhou Precision Metal Products Co. Ltd. | China | ||||||
| Tempel Precision Metal Products India Pvt. Ltd. | India | |||||||
| S.I.T.E.M. S.p.A. (2) | Italy | |||||||
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| Decoup S.A.S. | France | ||||||
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| Sitem Slovakia spol. s r.o. | Slovakia | ||||||
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| Stanzwerk AG | Switzerland | ||||||
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| Tempel Steel Europe GmbH | Germany | ||||||
The Worthington Steel Company | Ohio | ||||||||
| Worthington Steel Holding GmbH | Germany | |||||||
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| Worthington Steel GmbH | Germany | ||||||
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| Klöckner & Co SE (3) | Germany | |||||
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| ODS Metering Systems B.V. | Netherlands | ||||
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| ODS Belgium B.V. (4) | Belgium | |||
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| ODS do Brasil Sistemas de Medicao Ltda. | Mexico | |||
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| ODS Metering Systems Asia Pacific Pte. Ltd. | Singapore | |||
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| ODS Middle East FZE | United Arab Emirates | |||
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| ODS Saudi Co. LLC | Saudi Arabia | |||
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| ODS for Maintenance | Saudi Arabia | ||
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| Debrunner Koenig AG | Switzerland | ||||
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| Simfloc AG | Switzerland | |||
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| PC-Tech S.A. | Switzerland | |||
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| Müller Wüst AG | Switzerland | |||
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| Debrunner Metallservice AG | Switzerland | |||
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| Debrunner Bewetec AG | Switzerland | |||
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| Debrunner Bewehrungstechnik AG | Switzerland | |||
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| Debrunner Acifer AG | Switzerland | |||
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| Klöckner USA Holding Inc. | Delaware | ||||
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| Kloeckner Metals Corporation | Delaware | |||
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| Kloeckner Metals Service Centers de Mexico, S. de R.L. de C.V. | Mexico | ||
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| Kloeckner Specialty Metals de Mexico, S. de R.L. de C.V. | Mexico | |
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| NMML Asia, Limited | Hong Kong |
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| Kloeckner Metals P.R., Inc. | Delaware | ||
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| California Steel and Tube, LLC | Delaware | ||
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| Kloeckner Metals Relief Fund, Inc. | Delaware | ||
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| International Machinery Sales, Inc. | South Carolina | ||
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| Amerinox Processing, Inc. | New Jersey | ||
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| Kloeckner Acquisitions, LLC | Delaware | ||
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| Kloeckner Metals Germany GmbH | Germany | |||
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| Ambo Stahl GmbH. | Germany | ||
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| Klöckner Stahl und Metall Ges.m.b.H. | Austria | ||
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| Becker Stahl-Service GmbH | Germany | |||
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| Becker Aluminum-Service GmbH | Germany | ||
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| Becker Stainless GmbH | Germany | ||
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| Becker Stainless Center GmbH | Germany | |
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| Umformtechnik Stendal GmbH | Germany | ||
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| Umformtechnik Stendal UTS s.r.o. | Slovakia | |
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| XOM Materials GmbH | Germany | ||
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| Klöckner & Co Financial Services S.A. | Luxembourg | ||
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| kloeckner.i GmbH | Germany | ||
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| Klöckner & Co Center of Excellence GmbH | Germany | ||
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| kloeckner.v GmbH | Germany | ||
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| Paua Ventures Co-Invest 2 GmbH & Co. KG | Germany | |
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| HV Holtzbrinck Ventures Fund VIII GmbH & Co. | Germany | |
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| Unternehmertum VC Fonds III GmbH & Co. KG | Germany | |
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| SquareOne Fonds 2 GmbH & Co. KG | Germany | |
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| 468 Capital GmbH & Co. KG | Germany | |
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| Target Global Growth Fund II, SCSp-RAIF | Luxembourg | |
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| BigRep GmbH | Germany | |
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| Keelvar System Ltd. | Ireland |
| Worthington Taylor, LLC | Michigan | |||||||
| Worthington Receivables Company, LLC | Delaware | |||||||
| Worthington Steel HQ, LLC | Ohio | |||||||
The Worthington Steel Company, LLC | Ohio | ||||||||
Worthington Steel Rome, LLC | Ohio | ||||||||
Worthington Steel Services, LLC | Ohio | ||||||||
Worthington WSP, LLC | Michigan | ||||||||
WS Mexico Holdings, LLC (1) | Ohio | ||||||||
WS Escrow LLC | Delaware | ||||||||
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Joint Ventures |
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| Place of Organization | |||
Serviacero Planos, S. de R.L. de C.V. (5) | Mexico | ||||||||
Spartan Steel Coating, L.L.C. (6) | Michigan | ||||||||
TWB Company, L.L.C. (7) | Michigan | ||||||||
| Tailor Welded Blanks of Canada, Inc. | Canada | |||||||
| TWB of Ohio, Inc. | Ohio | |||||||
| TWB Industries, S.A. de C.V. (8) | Mexico | |||||||
| TWB de Mexico, S.A. de C.V. (8) | Mexico | |||||||
Worthington Samuel Coil Processing LLC (9) | Ohio | ||||||||
Worthington Specialty Processing | Michigan | ||||||||
| ProCoil Company, LLC | Delaware | |||||||
Birs-Stahl AG (10) | Switzerland | ||||||||
Kloeckner Metalls Austria GmbH & Co KG (11) | Germany | ||||||||