High-density polyethylene (HDPE) or polyethylene high-density (PEHD) is a polyethylene thermoplastic made from petroleum. It is sometimes called "alkathene" or "polythene" when used for pipes.With a high strength-to-density ratio, HDPE is used in the production of plastic bottles, corrosion-resistant piping, geomembranes, and plastic lumber. HDPE is commonly recycled, and has the number "2" as its resin identification code (formerly known as recycling symbol).In 2007, the global HDPE market reached a volume of more than 30 million tons.
Swimming pool installation
3-D printer filament
Arena Board (puck board)
Backpacking frames
Ballistic plates
Banners
Bottle caps
Chemical-resistant piping
Coax cable inner insulator
Food storage containers
Fuel tanks for vehicles
Corrosion protection for steel pipelines
Personal Hovercraft; albeit too heavy for good performance
Electrical and plumbing boxes
Far-IR lenses
Folding chairs and tables
Geomembrane for hydraulic applications (such as canals and bank reinforcements) and chemical containment
Geothermal heat transfer piping systems
Heat-resistant firework mortars
* Last for shoes
Natural gas distribution pipe systems
Fireworks
Plastic bags
Plastic bottles suitable both for recycling (such as milk jugs) or re-use
Plastic lumber
Plastic surgery (skeletal and facial reconstruction)
Root barrier
Snowboard rails and boxes
Stone paper
Storage sheds
Telecom ducts
Tyvek
Water pipes for domestic water supply and agricultural processes
Wood plastic composites (utilizing recycled polymers)
