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  2. Cast iron pipe - Wikipedia

    en.wikipedia.org/wiki/Cast_iron_pipe

    Cast iron pipe was superseded by ductile iron pipe, which is a direct development, with most existing manufacturing plants transitioning to the new material during the 1970s and 1980s. Ductile iron pipe is different than cast iron, because the introduction of magnesium during the casting process causes the graphite to form spheres (graphite ...

  3. The Milkmaid of Tsarskoye Selo - Wikipedia

    en.wikipedia.org/wiki/The_Milkmaid_of_Tsarskoye_Selo

    The legend spread widely and even attracted the interest of specialists. A stone bollard was placed near the fountain, to which a mug was chained with an iron chain for the use of numerous pilgrims. Chemical analysis, conducted in 1910 by Dr. Gutovkin, revealed that the water from the fountain was of inferior quality compared to the tap water ...

  4. Duriron Company - Wikipedia

    en.wikipedia.org/wiki/Duriron_Company

    The company derives its name from a high silicon cast iron alloy, Duriron, which rapidly became an industry standard for handling extremely corrosive materials.Duriron “denitrating towers” were in high demand during the First World War for safe handling of hot mixtures of nitric and sulfuric acids during the manufacturing of explosives.

  5. Pipe Cutting - Wikipedia

    en.wikipedia.org/wiki/Pipe_Cutting

    Plasma CNC Pipe Cutting . Hot cutting refers to a process in which materials are cut using a thermal torch. One of the most common techniques is oxy-fuel gas cutting, which is used extensively for cutting carbon and low-alloy steels. However, its efficiency diminishes as the alloy content of the material increases, limiting its applicability ...

  6. Annular cutter - Wikipedia

    en.wikipedia.org/wiki/Annular_cutter

    Annular cutters can also be used to make holes in pipes and tubes without dimpling and deburring. To make a hole in a tube or pipe easily an annular cutter should be used with a magnetic base drilling machine and a tube/pipe clamping device. The tube clamping device is a metallic device that is clamped on the tube with an adjustable chain.

  7. Pipe wrench - Wikipedia

    en.wikipedia.org/wiki/Pipe_wrench

    A pipe wrench is any of several types of wrench that are designed to turn threaded pipe and pipe fittings for assembly (tightening) or disassembly (loosening). The Stillson wrench, or Stillson-pattern wrench, is the usual form of pipe wrench, especially in the US. The Stillson name is that of the original patent holder, who licensed the design ...