Public domain
Conversion. Copper and brass processing. As extruded rod comes from the extrusion machine, it is too hot to handle. It is put under a cold water spray, then sent to the saws to be cut to shorter lengths for further operations. Chase Copper and Brass Company, Euclid, Ohio
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Credit lineConversion. Copper and brass processing. As extruded rod comes from the extrusion machine, it is too hot to handle. It is put under a cold water spray, then sent to the saws to be cut to shorter lengt. 1942-01-01. Palmer, Alfred T., United States. Office For Emergency Management. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.
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Conversion. Copper and brass processing. Copper tube is made either by extrusion or piercing. In the piercing method, illustrated here, a hot round billet, or solid piece of copper, about fourty-five inches long, is rotated between tapered rolls and forced against a pointed mandrel which pierces the