High Density Polyethylene tubes have excellent resistance to chemicals and abrasion. Omni directional porous structure, available in fine, medium, and course pore sizes, provides uniform distribution fo fine bubbles. Material complies with Code of Federal Regulations (USA), Title 21, Section 177.5.120 Item 2.1, for Food Contact[price]Plastic HDPE Pipe Pacific Corrugated Pipe Company[hdpe]Pacific Corrugated Pipe has manufactured and supplied a complete line of corrugated metal and corrugated High Density Polyethylene (HDPE) pipe and fittings for decades. We manufacture both Type C (single wall with a corrugated interior) and Type S (double wall with a smooth interior) pipe in support of our StormTite ® product line.[price]HDPE vs LLDPE vs LDPE Low Density Polyethylene versus [hdpe]High Density Polyethylene (HDPE, aka HD), has the distinction of being the strongest, toughest, most chemical resistant and least flexible of the four types of flexible plastic sheeting referenced in this article. HDPE is also the most UV resistant holding up to the harsh rays of the sun without needing UV additive packages. HDPEs strength