HDX™ is an ultra-high molecular weight resin of high density polyethylene.

BioTherm HDX (high density extrusion) is our durable polyethylene tubing solution commonly used for in slab and floor heating. Manufactured from a ultra-high molecular weight resin, HDX tubing is extremely tough and meets stringent ASTM testing standards for quality. It’s made from a distinct red color, so you know you are getting true HDX tubing.

We also offer our GreenPEX with E-Beam cross-linking for increased durability, commonly used in institutional environments, available with or without oxygen barrier.

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Specifications (Meets ASTM Material Specification D 3350)

	1/2"	3/4"
Material	HD 2007 High Density Polyethylene	HD 2007 High Density Polyethylene
HDX Color	Terra-cotta	Terra-cotta
Pipe Size	1/2"	3/4"
Nominal O.D.	.625"	.875"
Nominal I.D.	.485"	.681"
Minimum Wall Thickness	.07"	.097"
Weight per 100 feet	5.5 lbs	10.6 lbs
Standard Coil Length	1000 ft	500 ft
Standard Coil Diameter	16", ID inches	20", ID inches
Printing	Ft BioTherm 1/2" HDX Tubing (Date)(Time)	Ft BioTherm 3/4" HDX Tubing (Date)(Time)
Pressure Rating	180 psi @ 180° F (82 C)	180 psi @ 180° F (82 C)
Flow Rate	.0092 gal/ft.	.0184 gal/ft.
Normal Operating Temp.	140°F (60 C)	140°F (60 C)