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  2. Hendrick Manufacturing Company - Wikipedia

    en.wikipedia.org/wiki/Hendrick_Manufacturing_Company

    Hendrick Manufacturing Company is an American perforated metal manufacturer founded in 1876 in Carbondale, Pennsylvania, where it is still based.Over the years, additional manufacturing locations were established in California, Tennessee, Kentucky and Illinois.

  3. Perforated metal - Wikipedia

    en.wikipedia.org/wiki/Perforated_metal

    The process of perforating metal sheets has been practiced for over 150 years. In the late 19th century, metal screens were used as an efficient means of separating coal. The first perforators were laborers who would manually punch individual holes into the metal sheet. This proved to be an inefficient and inconsistent method which led to the ...

  4. Aleris - Wikipedia

    en.wikipedia.org/wiki/Aleris

    Aleris was also among the largest aluminum sheet suppliers for semi-trailers, and the leading aluminum sheet supplier for the U.S. residential construction industry. [4] The company increased production as the automotive industry began using more aluminum than steel. [4] [16] Aleris' new aluminum body sheet facility in Lewisport, Kentucky ...

  5. Marston Mat - Wikipedia

    en.wikipedia.org/wiki/Marston_mat

    RAF aircrew with one of their Bristol Beaufighters on a PSP airstrip at Biferno, Italy, August 1944. Marston Mat, more properly called pierced (or perforated) steel planking (PSP), is standardized, perforated steel matting material developed by the United States at the Waterways Experiment Station shortly before World War II, primarily for the rapid construction of temporary runways and ...

  6. Schaefer Group - Wikipedia

    en.wikipedia.org/wiki/Schaefer_Group

    Headquarter of SSI Schaefer. In 1937, Fritz Schaefer started a small company in his garage and produced a selection of sheet metal products. After switching to the serial production of transport boxes and containers, the company was able to expand its business and had to set up a larger facility in Neunkirchen-Salchendorf in 1948.

  7. List of commercially available roofing materials - Wikipedia

    en.wikipedia.org/wiki/List_of_commercially...

    Standing-seam metal roof with concealed fasteners. Mechanically seamed metal with concealed fasteners contains sealant in seams for use on very low sloped roofs, suitable for roofs of low pitch such as 0.5/12 to 3/12 pitch. Flat-seam metal with or without soldered seams. Steel coated with a coloured alloy of zinc and aluminium. Stone-coated ...