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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    Cast iron pipe was superseded by ductile iron pipe, which is a direct development, with most existing manufacturing plants transitioning to the new material during the 1970s and 1980s.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. Del Pilar-class offshore patrol vessel - Wikipedia

    en.wikipedia.org/wiki/Del_Pilar-class_offshore...

    The Del Pilar-class are offshore patrol vessels currently in service with the Philippine Navy and previously in service with the US Coast Guard as Hamilton-class high endurance cutters. The Department of National Defense is currently in the process of upgrading their systems and capabilities under a modernization project awarded to Hanwha ...

  4. BRP Gregorio del Pilar (PS-15) - Wikipedia

    en.wikipedia.org/wiki/BRP_Gregorio_del_Pilar_(PS-15)

    The Philippines reportedly ordered at least four new Mk.38 Mod 3 25mm naval guns, and are expected to be installed on all Gregorio del Pilar class ships. [ 14 ] [ 15 ] [ 16 ] It was also reported that the Philippine Navy will be getting sophisticated radar system capable of detecting and tracking surface threats, a Harpoon anti-ship missile ...

  5. Centrifugal casting (industrial) - Wikipedia

    en.wikipedia.org/wiki/Centrifugal_casting...

    Video of concrete pipe production. Centrifugal casting or rotocasting is a casting technique that is typically used to cast thin-walled cylinders. It is typically used to cast materials such as metals, glass, and concrete. A high quality is attainable by control of metallurgy and crystal structure.

  6. USCGC Hamilton (WHEC-715) - Wikipedia

    en.wikipedia.org/wiki/USCGC_Hamilton_(WHEC-715)

    USCGC Hamilton (WHEC-715) was a United States Coast Guard high endurance cutter and the lead ship of its class.It was based at Boston, Massachusetts from commissioning until 1991, then out of San Pedro, California before it was moved to its last home port in San Diego, California.

  7. Pipefitter - Wikipedia

    en.wikipedia.org/wiki/Pipefitter

    Pipe layers operate the backhoes and trenching machinery that dig the trenches to accommodate the placement of sanitary sewer pipes and stormwater sewer drainpipes. They use surveyor’s equipment to ensure the trenches have the proper slope and install the pieces of pipe in the trenches, joining the ends with cement, glue, or welding equipment.

  8. Ductile iron pipe - Wikipedia

    en.wikipedia.org/wiki/Ductile_iron_pipe

    In the late 1950s, ductile iron pipe was introduced to the marketplace, featuring higher strength and similar corrosion resistance compared to cast iron. [10] According to a 2004 study, an expected lifespan of 100 years is likely for ductile iron pipe, based on test results, field inspections and in-service operations over 50 years. [ 11 ]

  9. Plumbing - Wikipedia

    en.wikipedia.org/wiki/Plumbing

    Today, most plumbing supply pipe is made out of steel, copper, and plastic; most waste (also known as "soil") [30] out of steel, copper, plastic, and cast iron. [30] The straight sections of plumbing systems are called "pipes" or "tubes". A pipe is typically formed via casting or welding, whereas a tube is made through extrusion.

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