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.