Template:POTD/2014-10-26

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High-density polyethylene
The installation of high-density polyethylene (HDPE) pipe in a storm drain project in Mexico, photographed in 2012. HDPE is a polyethylene thermoplastic made from petroleum that is known for its high strength to density ratio. It is commonly used in the production of plastic bottles, corrosion-resistant piping, and plastic lumber.Photograph: Tomas Castelazo