Exhibit 21

SUBSIDIARIES OF WORTHINGTON INDUSTRIES, INC.

The following is a list of the subsidiaries, direct and indirect, of Worthington Industries, Inc. as of August 1, 2022. The names of indirectly-owned subsidiaries are indented under the names of their respective immediate parents:

Worthington Industries Leasing, LLC						Ohio
Worthington Services, LLC						Ohio
Worthington Industries Medical Center, Inc.						Ohio
Worthington Steel of Michigan, Inc. (d/b/a The Worthington Steel Company)						Michigan
	New AMTROL Holdings, Inc.					Delaware
		AMTROL Inc.				Rhode Island
			AMTROL North American Cylinders, LLC			Delaware
			AMTROL Water Technology, LLC			Delaware
			AMTROL International Investments Inc.			Rhode Island
			AMTROL Holding Netherlands B.V.			Netherlands
				AMTROL Holding Portugal, SGPS, Unipessoal, Lda		Portugal
					AMTROL-ALFA Metalomecanica, S.A.	Portugal
		AMTROL Licensing Inc.				Rhode Island
	GerCo Holdings, Inc.					Ohio
	Cleveland Pickling, Inc.					Delaware
	Precision Specialty Metals, Inc.					Delaware
	WI Ventures, LLC					Ohio
	Worthington-Buckeye, Inc.					Ohio
	Worthington Cylinder Corporation					Ohio
		dHybrid Systems, LLC				Ohio
		GTI Holding Company				Delaware
			General Tools & Instruments Company LLC			New York
				Mannix Instruments CO., LLC		New York
				PTI Distributors LLC		New York
				General Tools & Instruments (Shanghai) Company, Ltd.		China
				Level5 Tools, LLC		Kansas
		Worthington Cryogenics, LLC				Ohio
		Worthington Cylinders Mexico, S. de R.L. de C.V.				Mexico
		Worthington Industries International S.à.r.l.				Luxembourg
			Worthington Industries Poland sp zoo			Poland
			Worthington Cylinders GmbH			Austria
				Worthington Steel Mexico, S.A. de C.V.		Mexico
				Worthington Industries Germany UG		Germany
				PTEC Pressure Technology GmbH		Germany
		Worthington Cylinders Kansas, LLC				Ohio
		Worthington Cylinders Wisconsin, LLC				Ohio
		WC Realty Holdings LLC				Ohio
		Worthington Industries Consumer Products, LLC				Ohio
	Tempel Steel Company, LLC					Illinois
		T DO B, LLC				Ilinois
		Tempel Canada Corporation				Canada
		Tempel de Mexico, S De R.I. De C.V.				Mexico
		Temple HK Holding Co., Limited				Hong Kong
			Tempel Changzhou Precision Metal Products Co. Ltd.			China
		Tempel Precision Metal Products India Pvt. Ltd.				India
	Worthington Industries Engineered Cabs, Inc.					Delaware
	The Worthington Steel Company (formerly Worthington Ventures, Inc.)					Delaware
		Worthington CDBS Holding, LLC				Ohio
		Worthington Mid-Rise Construction, Inc.				Ohio
		Worthington Military Construction, Inc.				Ohio

The Worthington Steel Company		Ohio
	Worthington Taylor, LLC	Michigan
	Worthington Receivables Company, LLC	Delaware
The Worthington Steel Company, LLC		Ohio
Worthington Steel Company of Decatur, LLC		Alabama
Worthington Steel Rome, LLC		Ohio
Worthington WSP, LLC		Michigan

Joint Ventures
	ArtiFlex Manufacturing, LLC (1)			Delaware
		4400 Donker Land, LLC		Michigan
	Clarkwestern Dietrich Building Systems LLC (2)			Ohio
	Serviacero Planos, S. de R.L. de C.V. (3)			Mexico
	Serviacero Planos Servicios, S.A. de C.V. (i.e., services company to JV Company) (3)			Mexico
	Spartan Steel Coating, LLC (4)			Michigan
	Taxi Workhorse Holdings, LLC (5)			Delaware
	TWB Company, LLC (6)			Michigan
		Tailor Welded Blanks of Canada, Inc.		Canada
		TWB of Ohio, Inc.		Ohio
			TWB Industries, S.A. de C.V.	Mexico
			TWB de Mexico, S.A. de C.V.	Mexico
	Worthington Armstrong Venture (WAVE) (7)			Delaware
	Worthington Samuel Coil Processing LLC (8)			Ohio
	Worthington Specialty Processing (WSP) (9)			Michigan
		ProCoil Company, LLC		Delaware

(1) Unconsolidated joint venture with 50% owned by GerCo Holdings, Inc. and 50% owned by ITS-H Holdings, LLC

(2) Unconsolidated joint venture with 25% owned by Worthington CDBS Holding, LLC and 75% owned by CWBS-MISA, Inc.

(3) Unconsolidated joint venture with 50% owned by Worthington Steel Mexico, S.A. de C.V. and 50% owned by Inverzer, S.A. de C.V.

(4) Consolidated joint venture with 52% owned by Worthington Steel of Michigan, Inc. and 48% owned by AK Steel Corporation.

(5) Unconsolidated joint venture with 80% owned by AEP Taxi Workhorse Aggregator, LLC and 20% owned by Worthington Industries Engineered Cabs, Inc.

(6) Consolidated joint venture with 55% owned by Worthington Steel of Michigan, Inc. and 45% owned by a subsidiary of Boashan Iron & Steel Co., Ltd.

(7) Unconsolidated joint venture, operating as a general partnership, with 50% owned by The Worthington Steel Company (Delaware) and 50% owned by Armstrong Ventures, Inc., a subsidiary of Armstrong World Industries, Inc.

(8) Consolidated joint venture with 63% owned by Cleveland Pickling, Inc. and 37% owned by Samuel Manu-Tech Pickling Inc.

(9) Consolidated joint venture, operating as a general partnership, with 51% owned by Worthington WSP, LLC and 49% by USS WSP, LLC, a subsidiary of United States Steel Corporation.