Pipe Grade HDPE Pellets are HDPE pellets suitable for the production of HDPE Pipes. Pipe Grade HDPE is a type of HDPE that is harder and stronger than most other forms of HDPE. This is because pipe grade HDPE must be able to stand up to industrial pressures. HDPE Pipes are commonly used in underground, underwater, floating, and surface applications.
HDPE pipes have replaced concrete, steel, and iron pipes in many cases due to the fact that HDPE is lighter and more chemically resistant than these more traditional materials. Pipe Grade HDPE pellets create pipes with a minimum tensile strength of 4550 psi, and many blends of pipe grade HDPE pellets have even greater strength. HDPE also possesses a flexibility often referred to as the “trampoline effect”, this property of HDPE allows it to change shape when under pressure, changing perhaps from a circular pipe shape to a more oval one, without breaking or cracking. This is highly important for applications where some weight may be exerted on pipes, for example, in underwater or underground applications.
As has been indicated, HDPE’s strength does not only fall in the physical camp, HDPE is also resistant to many chemicals, including most acids and bases. HDPE retains its integrity when exposed to solvents, oils, ketones, and aldehydes. HDPE maintains its integrity when exposed to PH 1.5 < pH < 14, a range which makes it suitable for a wide range of applications.
Metal and concrete are also infamous for having problems with temperature variances. Unlike these substances which can burst or crack in extreme temperatures, HDPE can withstand most normal temperature ranges, demonstrating a range of -148 degrees Fahrenheit (-100 degrees Celsius), to 248 degrees Fahrenheit (120 degrees Celsius).
Pipe grade HDPE pellets are made from pipe grade HDPE, which comes in both virgin and reprocessed form. Reprocessed HDPE is quite often used in pipes because it is a low cost material that does the job that more expensive virgin HDPE. Because reprocessed HDPE is often discolored from the dyes that have seeped into the scrap HDPE from labels, and other colored pieces of HDPE, it is not favored for applications that require a pretty end result. Pipes for underground applications, for instance, rely mainly on physical strength and chemical resistance, appearance is not of great importance, so reprocessed pipe grade HDPE pellets make excellent raw material for these applications.
Virgin pipe grade HDPE pellets are made from virgin HDPE, which is freshly created HDPE. They have several advantages over reprocessed pipe grade HDPE pellets, though these advantages may or may not be relevant to specific applications. Because they have not undergone previous heat cycles, which weaken the molecular bonds, virgin pipe grade HDPE pellets may be a little stronger than reprocessed pellets, though if one purchases high quality reprocessed pellets, the differences should be negligible.
Virgin HDPE also has a nicer color than reprocessed HDPE, being a translucent white, however if appearance is that important, one can always apply a coating or special outer layer to reprocessed HDPE pipes to improve their appearance.
Virgin HDPE has also never been exposed to any form of contamination, unlike reprocessed HDPE which is exposed to a wide range of contaminants during its life. Most of these contaminants are filtered from the HDPE however, and their effect is negligible at best in most instances.
If you are searching for a high quality raw material for HDPE pipes, purchasing HDPE pipe grade pellets from a reputable seller is the surest way to get the best value for your money. Be sure to familiarize yourself with the specifications of your project before contacting us to ensure that the pipe grade HDPE pellets you purchase meet your specific requirements.
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