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Production of galvannealed sheet steel begins with hot dip galvanization of sheet steel. After passing through the galvanizing zinc bath the sheet steel passes through air knives to remove excess zinc, and is then heated in an annealing furnace for several seconds causing iron and zinc layers to diffuse into one another causing the formation of zinc-iron alloy layers at the surface.
O’Neal Industries (ONI) is a family of closely related companies, all engaged in the metals industry. It provides products and services that range from steel beams and plates to specialty alloys and complex manufactured components and tubing, ONI supplies customers across a variety of industries worldwide.
Bethlehem Steel: Builder and Arsenal of America (2010) excerpt and text search; Warren, Kenneth. The American Steel Industry, 1850–1970: A Geographical Interpretation (1973) (ISBN 0198232144) Whaples, Robert. "Andrew Carnegie", EH.Net Encyclopedia of Economic and Business History online; U.S. Steel's History of U.S. Steel
ACIPCO has divisions for Steel Pipe, Ductlie Iron Pipe (both based in Birmingham), Flow Control (valve- and hydrant-producing facilities in Beaumont, Texas, and South St. Paul, Minnesota), Spiral-Weld Pipe (in Columbia, South Carolina; Flint, Michigan; and Paris, Texas), and Castings (in Pryor, Oklahoma).
The Iron & Steel Museum of Alabama, also known as the Tannehill Museum, is an industrial museum that demonstrates iron production in the nineteenth-century Alabama [1] located at Tannehill Ironworks Historical State Park in McCalla, Tuscaloosa County, Alabama. Opened in 1981, it covers 13,000 square feet (1,200 m 2). [2]
Galvanized fumes are released when the galvanized metal reaches a certain temperature. This temperature varies by the galvanization process used. In long-term, continuous exposure, the recommended maximum temperature for hot-dip galvanized steel is 200 °C (392 °F), according to the American Galvanizers Association.
This is the most common use for galvanized metal; hundreds of thousands of tons of steel products are galvanized annually worldwide. In developed countries, most larger cities have several galvanizing factories, and many items of steel manufacture are galvanized for protection.
The Birmingham District is a geological area in the vicinity of Birmingham, Alabama, where the raw materials for making steel - limestone, iron ore, and coal - are found together in abundance. The district includes Red Mountain , Jones Valley, and the Warrior and Cahaba coal fields in Central Alabama .