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  2. Municipal castings - Wikipedia

    en.wikipedia.org/wiki/Municipal_castings

    The Municipal Castings Association is an organization made up of the following American manufacturers: Charlotte Pipe and Foundry Company, D&L Foundry and Supply, US Foundry, EBAA Iron, EJ, McWane, Neenah Foundry, and Spring City. [3] Municipal castings also have to follow the country-of-origin marking requirement laws.

  3. Neenah Foundry - Wikipedia

    en.wikipedia.org/wiki/Neenah_Foundry

    Cast metal storm drain grate with Neenah Foundry marking. Neenah Foundry is a manufacturing company in the north central United States, based in Neenah, Wisconsin.The company manufactures cast iron manhole covers, gratings, and similar items for municipal and construction applications.

  4. EJ (company) - Wikipedia

    en.wikipedia.org/wiki/EJ_(company)

    EJ is a producer and supplier of construction castings to hundreds of U.S. cities, townships, counties, and states. The EJ product line includes manhole frames and manhole covers , utility castings for the telecommunications industry, trench grates, tree grates, detectable warning plates, airport and design specific castings, monument boxes ...

  5. Manhole cover - Wikipedia

    en.wikipedia.org/wiki/Manhole_cover

    Manhole covers are often made out of cast iron, concrete or a combination of the two. This makes them inexpensive, strong, and heavy, usually weighing more than 113 kilograms (249 lb) [citation needed]. The weight helps to keep them in place when traffic passes over them, and makes it difficult for unauthorized people without suitable tools to ...

  6. American Cast Iron Pipe Company - Wikipedia

    en.wikipedia.org/wiki/American_Cast_Iron_Pipe...

    In 1955, American shipped its first large order of ductile iron pipe. A new melting system in 1972, including the largest cupola of its kind in the world, would supply the new iron for this pipe, and American would move from a Sand Spun casting process to a generation of deLavaud metal molds, still used today.

  7. Packaged metering manhole - Wikipedia

    en.wikipedia.org/wiki/Packaged_Metering_Manhole

    Packaged metering manhole factories integrate a primary device (typically a flume [1] or weir [2]) into a fiberglass manhole. The result is a lightweight, single-piece (generally), corrosion resistant structure from which an operator can measure piped flows, take composite samples, and perform water quality parameter monitoring.

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