Exhibit 21.1

Subsidiaries*

Name of Subsidiary						Jurisdiction of Formation
AAA Galvanizing – Chelsea, LLC						Delaware
AAA Galvanizing – Dixon, Inc.						Delaware
AAA Galvanizing – Hamilton, LLC						Delaware
AAA Galvanizing – Joliet, Inc.						Delaware
AAA Galvanizing – Peoria, Inc.						Delaware
AAA Galvanizing – Winsted, Inc.						Delaware
Arbor-Crowley, LLC						Delaware
Arizona Galvanizing, Inc.						Arizona
ArkGalv, LLC						Arkansas
Atkinson Industries, Inc.						Kansas
Automatic Processing Incorporated						Mississippi
Aztec Industries, Inc.						Mississippi
Aztec Manufacturing – Waskom LLC						Texas
Aztec Manufacturing LLC						Texas
AZZ Acquisition Sub, LLC						Delaware
AZZ Bus System Services LLC						Delaware
AZZ Canada Limited						Canada
AZZ Electrical Holding B.V.						Netherlands
AZZ Enclosure Systems – Chattanooga LLC						Delaware
AZZ Enclosure Systems LLC						Delaware
AZZ Galvanizing – Big Spring, LLC						Delaware
AZZ Galvanizing - Bristol LLC						Delaware
AZZ Galvanizing – Chattanooga LLC						Tennessee
AZZ Galvanizing – Kennedale, LLC						Delaware
AZZ Galvanizing – Louisiana LLC						Delaware
AZZ Galvanizing – Morgan City, LLC						Delaware
AZZ Galvanizing – Nashville						Delaware
AZZ Galvanizing – Nebraska, LLC						Delaware
AZZ Galvanizing – Reno, LLC						Delaware
AZZ Galvanizing – Rockford LLC						Delaware
AZZ Galvanizing – San Antonio, LLC						Delaware
AZZ Galvanizing – South Carolina LLC						Delaware
AZZ Galvanizing and Plating – Milwaukee LLC						Delaware
AZZ Galvanizing Calgary Ltd.						Canada
AZZ Galvanizing Canada Limited						Canada
AZZ Galvanizing Co. Ltd.						Canada
AZZ Galvanizing Edmonton Ltd.						Canada
AZZ Galvanizing Saskatchewan Ltd.						Canada
AZZ Galvanizing Saskatoon Ltd.						Canada

AZZ Group LLC						Delaware
AZZ Holding B.V.						Netherlands
AZZ Holdings LLC						Delaware
AZZ International Holdings LLC						Delaware
AZZ Specialty Repair and Overhaul LLC						Delaware
AZZ Specialty Welding Services India Private Limited						India
AZZ Specialty Welding Services Singapore Ltd.						Singapore
AZZ Surface Technologies LLC						Delaware
AZZ Surface Technologies – Crowley LLC						Delaware
AZZ Surface Technologies – Gainesville LLC						Delaware
AZZ Surface Technologies – Garland North LLC						Delaware
AZZ Surface Technologies – Garland South LLC						Delaware
AZZ Surface Technologies – Rowlett LLC						Delaware
AZZ Surface Technologies – Tampa LLC						Tampa
AZZ Surface Technologies – Terrell LLC						Delaware
AZZ Trading LLC						Delaware
AZZ Trading (Shanghai) Co., Ltd						China
AZZ WSI B.V.						Netherlands
AZZ WSI Canada, ULC						Canada
AZZ WSI do Brasil Ltda.						Brazil
AZZ WSI Holding B.V.						Netherlands
AZZ WSI LLC						Delaware
AZZ WSI Poland, SP. z.o.o.						Poland
Carter and Crawley LLC						Delaware
Central Electric Company						Missouri
Central Electric Manufacturing Company						Missouri
CGIT (Jiangsu) High Voltage Power Co., Ltd						China
CGIT Systems, Inc.						Delaware
Electrical Power Systems, LLC						Missouri
Gulf Coast Galvanizing, LLC						Alabama
International Galvanizers LLC						Texas
NAGALV-Ohio, Inc.						Delaware
NAGALV-WV, Inc.						Delaware
North American Galvanizing & Coatings, Inc.						Delaware
North American Galvanizing Company, LLC						Delaware
Powergrid Solutions LLC						Delaware
Rig-A-Lite LLC						Texas
Rogers Galvanizing Company – Kansas City						Oklahoma
The Calvert Company, Inc.						Mississippi
Witt Galvanizing – Cincinnati, LLC						Delaware
Witt Galvanizing – Muncie, LLC						Delaware
Witt Galvanizing – Plymouth, LLC						Delaware
Zalk Steel & Supply Co.						Delaware