Exhibit 99.1

Ameron International Corporation Completes Stock Split

    PASADENA, Calif.---(BUSINESS WIRE)--May 27, 2003--Ameron
International Corporation (NYSE:AMN) announced today the completion of
its two-for-one stock split, paid in the form of a stock dividend, to
shareholders of record on May 1, 2003. Shareholders received one
additional share of Ameron common stock for each share owned on the
record date. The total number of shares of common stock outstanding
after the split was 7,919,024.
    Ameron announced the stock split on March 27, 2003, at the same
time it announced a quarterly dividend of $.40 per share of stock
which represents a 25% increase over the previous dividend level.
    James S. Marlen, Ameron's Chairman, President and Chief Executive
Officer, repeated, "The stock split increased the number of Ameron
shares in the market, and we hope that additional shares will lead to
wider ownership and improved liquidity for all stockholders. The
increased dividend payout is representative of management's favorable
long-term outlook for Ameron's future business prospects and cash
generating capabilities."
    Ameron International Corporation is a multinational manufacturer
of highly-engineered products and materials for the chemical,
industrial, energy, transportation and infrastructure markets. Traded
on the New York Stock Exchange (AMN), Ameron is a leading producer of
water transmission lines; high-performance coatings and finishes for
the protection of metals and structures; fiberglass-composite pipe for
transporting oil, chemicals and corrosive fluids and specialized
materials and products used in infrastructure projects. The Company
operates businesses in North America, South America, Europe,
Australasia and Asia. It also participates in several joint-venture
companies in the U.S., Saudi Arabia, Kuwait, Egypt and Mexico.

    Cautionary statement for purposes of the "Safe Harbor" provisions
of The Private Securities Litigation Reform Act of 1995: Any
statements in this report that refer to the estimated or anticipated
future results of Ameron International Corporation ("Ameron" or the
"Company") are forward-looking and reflect the Company's current
analysis of existing trends and information. Actual results may differ
from current expectations based on a number of factors affecting
Ameron's businesses, including competitive conditions and changing
market situations. Matters affecting the economy generally, including
the state of economies worldwide, can affect Ameron's results.
Forward-looking statements represent the Company's judgment only as of
the date of this report. Since actual results could differ materially,
the reader is cautioned not to rely on these forward-looking
statements. Moreover, Ameron disclaims any intent or obligation to
update these forward-looking statements.

    CONTACT: Ameron International Corporation
             James S. Marlen/Gary Wagner, 626/683-4000