EX-21 6 q42021exhibit21.htm EX-21
Exhibit 21.0
MUELLER INDUSTRIES, INC.
List of Subsidiaries

|  | State or Country
Subsidiary* |  | of Incorporation
ATCO Rubber Products, Inc. |  | Michigan
Mueller Brass Holding Company, Inc. |  | Delaware
Mueller Brass Co. (Assumed name: Mueller Brass Products) |  | Michigan
Extruded Metals, Inc. |  | Delaware
Mueller Advanced Connections, LLC |  | Delaware
Mueller Industrial Realty Co. |  | Michigan
Itawamba Industrial Gas Company, Inc. |  | Mississippi
Mueller Plastics Holding Company, Inc. |  | Ohio
Mueller Plastics Corporation, Inc. |  | Delaware
Mueller Brass Forging Company, Inc. |  | Delaware
Mueller Copper Tube Company, Inc. |  | Delaware
Mueller Fittings, LLC |  | Mississippi
Mueller Fittings Company, Inc. |  | Michigan
Mueller East, Inc. |  | Delaware
Mueller Formed Tube Company, Inc. |  | Delaware
Mueller Impacts Company, Inc. |  | Delaware
Mueller Press Company, Inc. |  | Mississippi
Mueller Refrigeration Products Company, Inc. |  | Delaware
Mueller LBHC, Inc. |  | Delaware
Lincoln Brass Works, Inc. (Assumed name: Mueller Gas Products) |  | Michigan
Overstreet-Hughes, Co., Inc. |  | Tennessee
Mueller Refrigeration LLC |  | Delaware
Mueller Refrigeration Holding Company, Inc. |  | Delaware
Mueller Streamline Co. |  | Delaware
Kessler Sales & Distribution LLC |  | Delaware
B&K, LLC (d/b/a BK Products) |  | Delaware
Heatlink Group USA, LLC |  | Tennessee
Precision Tube Company, LLC |  | Pennsylvania
Mueller Southeast, Inc. |  | Pennsylvania
Southland Pipe Nipples Company, Inc. |  | Texas
Mueller Tool and Machine, Inc. |  | Delaware
Mueller Casting Company, Inc. |  | Delaware
Mueller Packaging, LLC |  | Mississippi
Micro Gauge, Inc. |  | Michigan
Microgauge Machining, Inc. |  | Michigan
Propipe Technologies, Inc. (Assumed name: Mueller Gas Products) |  | Ohio
WTC Holding Company |  | Michigan
MA Industrial Secured Lending, LLC (5) |  | Delaware
Muellux Holding Company I SARL |  | Luxembourg
Muellux Holding Company II SARL |  | Luxembourg
Mueller Middle East B.S.C. (8) |  | Bahrain
Mueller Europe Investment Company Ltd. |  | United Kingdom
Jungwoo Metal Ind. Co., Ltd. (6) |  | South Korea

|  | State or Country
Subsidiary* |  | of Incorporation
Mueller Europe, Limited |  | United Kingdom
Westermeyer Industries, Inc. |  | Illinois
Sherwood Valve Products, Inc. |  | Ohio
Sherwood Valve LLC |  | Delaware
DENO Investment Company, Inc. |  | Michigan
Mueller de Mexico, S.A. de C.V. (1) |  | Mexico
The Mosack Group, LLC (2) |  | Delaware
DENO Holding Company, Inc. |  | Michigan
B & K Industries, Inc. |  | Illinois
Mueller Copper Tube Products, Inc. |  | Delaware
Howell Metal Company (d/b/a Precision Tube) |  | Virginia
Turbotec Products, Inc. |  | Connecticut
Mueller Canada Holding Co. Ltd. |  | Alberta
Heatlink Group, Inc. |  | Alberta
Great Lakes Copper Ltd. |  | Nova Scotia
Linesets, Inc. |  | Delaware
Climate Components, LLC |  | Delaware
Arava Natural Resources Company, Inc. |  | Delaware
United States Fuel Company |  | Nevada
King Coal Company |  | Utah
Canco Oil & Gas Ltd. |  | Alberta, Canada
Aegis Oil and Gas Leasing Ltd. |  | Alberta, Canada
Bayard Mining Corp. |  | Delaware
Washington Mining Company |  | Maine
Amwest Exploration Company |  | Delaware
USSRAM Exploration Company |  | Maine
White Knob Mining Company |  | Idaho
Arava Exploration Company |  | Colorado
Summit Systems, Inc. |  | Delaware
Mining Remedial Recovery Company |  | Delaware
Carpentertown Coal & Coke Company |  | Pennsylvania
U.S.S. Lead Refinery, Inc. |  | Maine
Leon Water Enterprises, Inc. (50%) |  | Texas
Macomber Construction Company |  | Ohio
Macomber, Incorporated |  | Ohio
Macomber Building and Land Corporation |  | Delaware
DENO Investment Company II, Inc. |  | Michigan
Tecumseh Products Holdings LLC (7) |  | Delaware
Tecumseh Products Co. |  | Michigan
MII Financial Corporation |  | Michigan
Mueller Streamline Holding S.L.U. |  | Spain
WTC HoldCo I, LLC |  | Delaware
WTC HoldCo II, LLC |  | Delaware
Mueller Comercial de Mexico S. de R.L. de C.V. (3) |  | Mexico
NICNA Mexico Servicios, S. de R.L. de C.V. (4) |  | Mexico
Mueller Streamline II, LLC |  | Delaware
Changzhou Mueller Refrigerant Valve Manufacturing Co., Ltd. |  | China

|  | State or Country
Subsidiary* |  | of Incorporation
Mueller Industries Trading (Shanghai) Co., Ltd. |  | China
Mueller Streamline Trading, LLC |  | Delaware
Mueller Streamline China, LLC |  | Delaware

*All subsidiaries are 100% owned, except as shown.
(1) Owned by DENO Investment Company, Inc. (99.94%) and Mueller Streamline Co. (.06%)
(2) Owned by DENO Investment Company, Inc. (17%)
(3) Owned by Mueller Streamline Holding S.L.U. (99.983%), WTC HoldCo I, LLC (0.016%), and WTC HoldCo II, LLC (0.001% )
(4) Less than 1% of the outstanding common stock is owned by WTC HoldCo I, LLC
(5) Owned by WTC Holding Company (50%)
(6) Owned by Mueller Europe Investment Company Ltd. (60%)
(7) Owned by DENO Investment Company II, Inc. (50%)
(8) Owned by Muellux Holding Company II SARL (55%)