EXHIBIT 32.1

CERTIFICATION OF CHIEF EXECUTIVE OFFICER

PURSUANT TO 18 U.S.C. SECTION 1350 AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

The undersigned, David H. Dingus, has executed this certification in connection with the filing with the Securities and Exchange Commission of AZZ incorporated's Amendment No. 1 to the Annual Report on Form 10-K for the fiscal year ended February 28, 2013 (the “Report”). The undersigned hereby certifies that:

1. the Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

2. the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of AZZ incorporated.

Date: May 2, 2013	/s/ David H. Dingus
	David H. Dingus
	President and Chief Executive Officer