Exhibit 21.1

Subsidiaries*


Name of Subsidiary						Jurisdiction of Formation

101132119 Saskatchewan Ltd.						Canada
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 Holding Company LLC						Delaware
Atlantic Research, LLC						Delaware
Automatic Processing Incorporated						Mississippi
Aztec Industries, Inc.						Mississippi
Aztec Manufacturing – Waskom LLC						Texas
Aztec Manufacturing LLC						Texas
AZZ Acquisition Sub, LLC						Delaware
AZZ Canada Limited						Canada
AZZ Financial, LLC						Delaware
AZZ Galvanizing - Bristol LLC						Delaware
AZZ Galvanizing – Canton East LLC						Delaware
AZZ Galvanizing – Chattanooga LLC						Tennessee
AZZ Galvanizing – Kennedale, LLC						Delaware
AZZ Galvanizing – Louisiana 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 Saskatoon Ltd.						Canada
AZZ Group LLC						Delaware
AZZ Holdings LLC						Delaware
AZZ SPE LLC						Delaware
AZZ SPE-1 LLC						Delaware


AZZ Surface Technologies LLC						Delaware
AZZ Surface Technologies – Crowley LLC						Delaware
AZZ Surface Technologies – Gainesville LLC						Delaware
AZZ Surface Technologies – Rowlett LLC						Delaware
AZZ Surface Technologies – Tampa LLC						Tampa
AZZ Surface Technologies – Terrell LLC						Delaware
Casco Investors LLC						Delaware
Gulf Coast Galvanizing, LLC						Alabama
International Galvanizers LLC						Texas
Midwest Metal Coatings, LLC						Delaware
NAGALV-Ohio, Inc.						Delaware
NAGALV-WV, Inc.						Delaware
North American Galvanizing & Coatings, Inc.						Delaware
North American Galvanizing Company, LLC						Delaware
OCU LLC						Delaware
Precoat Can Machinery, Inc.						Ohio
Precoat Elk Ridge Holdings Corporation						Delaware
Precoat Holdings I LLC						Delaware
Precoat Holdings II LLC						Delaware
Precoat LLC						Delaware
Precoat Metal Coatings LLC						Delaware
Precoat Metal Acquisition, LLC						Delaware
Precoat Metals Corp.						Indiana
Precoat Metals Holdings, LLC						Delaware
Precoat Metals Washington LLC						Delaware
Precoat Mezzanine LLC						Delaware
Rogers Galvanizing Company – Kansas City						Oklahoma
Sabine Towing & Transportation, LLC						Delaware
Witt Galvanizing – Cincinnati, LLC						Delaware
Witt Galvanizing – Muncie, LLC						Delaware
Witt Galvanizing – Plymouth, LLC						Delaware
Zalk Steel & Supply Co.						Delaware

AZZ INC 10-K