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

Red Hen, LLC

Rhode Island

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

Worthington Cylinders-Embalagens Industriais de Gas, 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

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 Energy Group, Inc.

Ohio

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

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

Worthington Taylor, LLC

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.