Original oil and gas trade magazine vintage ad for AMERICAN HOT DIP GALVANIZERS. ASSOCIATION. Main office was located in Washington, DC. Hot Dip Galvanized Tubes for Heat Exchangers Solve Fouling and Corrosion Problems in Oil Refinery. Used at the Beaumont Refinery of Mobil Oil Company. This unique 1962 old petroleum oilfield drilling equipment magazine advertisement would display beautifully matted and framed.