The key differences between Polyethelene and High Density Polyethelene Pipe
HDPE Pipe by Rendifield
Polyethylene (PE) piping is the generic name for thermoplastic piping which is manufactured from ethylene gas. This substance was discovered in 1933.
HDPE (High Density Polyethylene) came about following further experimentation in the 1950’s using a more economical production method.
German Professor Karl was awarded the Nobel Prize for Chemistry in 1963 for his work in this field. Whereas the rather soft and easily deformed polyethylene was first used during WW2 to insulate radar systems on airplanes, the first use of HDPE was to make baby bottles to replace glass. Today polyethylene is used to manufacture all sorts of plastic products like shopping bags.
HDPE piping refers to a type of piping which is denser than the original polyethylene piping.
This means such piping is more rigid and impact-resistant. As well as having a much higher boiling point. Manufacturers often add carbon black or other colours during the production of HDPE piping to make it more resistant to UV rays.
HDPE piping is 9 times stronger than normal polyethylene piping and is more durable than some metals used for piping.
This increased strength means HDPE piping can be safely used to transport pressurised liquids and gases, or even to sheath telecommunications cabling.