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  2. High-density polyethylene - Wikipedia

    en.wikipedia.org/wiki/High-density_polyethylene

    HDPE is known for its high strength-to-density ratio. [4] The density of HDPE ranges from 930 to 970 kg/m 3. [5] Although the density of HDPE is only marginally higher than that of low-density polyethylene, HDPE has little branching, giving it stronger intermolecular forces and tensile strength (38 MPa versus 21 MPa) than LDPE. [6]

  3. HDPE pipe - Wikipedia

    en.wikipedia.org/wiki/HDPE_pipe

    HDPE pipe is a type of flexible plastic pipe used to transfer fluids and gases. It is often employed for replacing aging concrete or steel main pipelines . Constructed from the thermoplastic HDPE (high-density polyethylene ), it has low permeability and robust molecular bonding, making it suitable for high-pressure pipelines .

  4. Polyethylene - Wikipedia

    en.wikipedia.org/wiki/Polyethylene

    [7] [19] LDPE is softer and more transparent than HDPE. For medium- and high-density polyethylene the melting point is typically in the range 120 to 130 °C (248 to 266 °F). The melting point for average commercial low-density polyethylene is typically 105 to 115 °C (221 to 239 °F).

  5. Plastic pipework - Wikipedia

    en.wikipedia.org/wiki/Plastic_pipework

    Two variants are HDPE pipe (high-density polyethylene) [8] and the more heat resistant PEX (cross-linked polyethylene, also XLPE). PE has been used for pipes since the early 1950s. PE pipes are made by extrusion in a variety of sizes dimensions. PE is lightweight, flexible and easy to weld. Its smooth interior finish ensures good flow ...

  6. JM Eagle - Wikipedia

    en.wikipedia.org/wiki/JM_Eagle

    JM Eagle is an American corporation and a manufacturer of plastic pipe. [1] At its 22 plants in North America, the company manufactures polyvinyl chloride (PVC) and high-density polyethylene pipe for a variety of industries including utility, plumbing, electrical, natural gas, irrigation, potable water, drainage, and sewage.

  7. Medium-density polyethylene - Wikipedia

    en.wikipedia.org/wiki/Medium-density_polyethylene

    Medium-density polyethylene (MDPE) is a type of polyethylene defined by a density range of 0.926–0.940 g/cm 3. [1] It is less dense than HDPE, which is more common. MDPE can be produced by chromium/silica catalysts, Ziegler-Natta catalysts or metallocene catalysts. MDPE has good shock and drop resistance properties.

  8. Use of HDPE in nuclear power plant piping systems - Wikipedia

    en.wikipedia.org/wiki/Use_of_HDPE_in_Nuclear...

    Pipe Surface Alignment: A change in the pipe outside diameter (O.D.) surface misalignment of more than 10 percent of the wall thickness of the thinner member to be fused. (3) PE Material: Each lot of polyethylene source material to be used in production (XXVI–2310(c)). (4) Wall Thickness: Each thickness to be fused in production (XXVI–2310(c)).

  9. Expanded polyethylene - Wikipedia

    en.wikipedia.org/wiki/Expanded_polyethylene

    Polyethylene bead foams (including) EPE can be used to replace both polystyrene foam, and both rigid and flexible polyurethane. Uses include cushioning applications, and impact absorption applications including packaging. [4] Consumption of polyethylene for PE foam was estimated at 114x10 6 kg in 2001. The majority was used for non-crosslinked ...

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