EXHIBIT 21
SUBSIDIARIES OF THE REGISTRANT
Parents
None.

|  | Jurisdiction of |  | Percent of
Subsidiaries Consolidated |  | Incorporation |  | Stock Owned
Amercoat Japan Company, Limited |  | Japan |  | 100
American Pipe & Construction International |  | California |  | 100
Ameron (Australia) Pty. Limited |  | Australia |  | 100
Ameron B.V. |  | the Netherlands |  | 100
Ameron Composites Inc. |  | Delaware |  | 100
Ameron (Hong Kong) Ltd. |  | Hong Kong |  | 100
Ameron Malaysia Sdn. Bhd. |  | Malaysia |  | 100
Ameron (New Zealand) Limited |  | New Zealand |  | 100
Ameron (Pte) Ltd. |  | Singapore |  | 100
Ameron (UK) Limited |  | United Kingdom |  | 100
Centron International, Inc. |  | Delaware |  | 100
Island Ready-Mix Concrete, Inc. |  | Hawaii |  | 100
Pipeline Industria e Comercio de Fibra de Vidro Ltda (“Polyplaster”) |  | Brazil |  | 100
Tubos California Corporation |  | California |  | 100
Tubos Y Activos, S. de R.L. de C.V. |  | Mexico |  | 100

Subsidiaries Not Consolidated and |  |  |  |
Fifty-Percent or Less Owned Companies |  |  |  |
TAMCO |  | California |  | 50
Bondstrand, Ltd. |  | Saudi Arabia |  | 40
Ameron Saudi Arabia, Ltd. |  | Saudi Arabia |  | 30

Names of other consolidated subsidiaries and subsidiaries not consolidated and fifty-percent or less owned companies are omitted because when considered in the aggregate as a single subsidiary they do not constitute a significant subsidiary.