Check up to five results to perform an action.
ApplicationHigh Density Polyethylene Duct has been tested and proven under the most severe conditions. From extreme temperatures to abrasive and high tension applications in underground installations, HDPE provides quality service and economy in a wide range of uses. As a smooth and flexible duct for cable, HDPE is unequaled for ease of installation and continuous strength. DescriptionThe duct shall be manufactured from virgin high density polyethylene. The addition of clean rework material is permissible if generated in the manufacturer’s own plant. The ducts are supplied with either smooth, ribbed, or corrugated walls and come in a multitude of colors. The duct shall be capable of being coiled (reeled) in continuous lengths, transported, stored outdoors and subsequently uncoiled for installation - without affecting its properties or performance.
Environmental PerformanceThe duct shall perform in underground and above-ground temperature range of minus 300° temperature range of minus 300°F to 1300°F without degradation of material properties. The duct specified for aerial installation shall be ultraviolet light-resistant. It shall be possible to bend the duct to a minimum (supported) radius of 10 diameters. Workmanship The duct shall be free of visible cracks, holes or other physical defects that would degrade its performance. It shall be as uniform as practicable in respect to overall dimensions, color, density, thickness, etc.
ColorThe duct for exposed areas (black) shall have a minimum of carbon black. All other colors shall have a UV light stabilizer which will protect the duct for a minimum of 12 months in direct sunlight.
MarkingsThe duct shall have a durable identification showing the name or trademark of the manufacturer, duct size (i.e., 2” IPS SCH-80), date and reference code. Duct for electrical cable should have “CAUTION - HIGH-VOLTAGE” printed at regular intervals. Other special markings can be agreed upon between the buyer and seller.
CappingThe open ends of each length of reeled duct shall be sealed by plastic caps to prevent the entrance of dirt and/o r moisture.
Pull Rope and LubricantThe duct should be equipped with a factory installed rope or tape and pre-lubed to aid in the installation of cable. The rope can be provided with varying strengths as needed for a particular installation. Check with a manufacturer for specifications.
CouplingsCouplings should be available to quickly connect the duct and should be air and watertight (i.e., Duct-Lok type couplings in either plastic or aluminum, depending on type of installation). Packaging The duct should be provided on lightweight metal reels in maximum lengths possible with no joints or splices. This will keep coupling requirements to a minimum. Special reel sizes and/ or dimensions should be available for special installations.
CorrosionThe duct shall be resistant to most harsh chemicals and/or protected against degradation due to oxidation or general corrosion.
InstallationThe duct shall be capable of being direct buried by plowing or trenching with no special consideration to using selective backfill. The duct shall also be capable of being encased in concrete.
NOTE: HDPE conduit is manufactured to the dimension and requirements of ASTM F2160. Ovality (out-of-roundness) and curvature are inherent characteristics of coiled, continuous length HDPE conduit. While these conditions are normal and expected and are not a concern in most applications, some installations or applications may require “re-rounding” of the conduit. When this is necessary, ovality should be corrected in the field by processing the conduit through re-rounding and straightening equipment during installation.
Tests on Resins and Finished Duct
Since specifications vary from customer to customer, we perform in-house lab tests on resins and finished products which include, but are not limited to the following:
Please refer to our technical data brochure. This shows different design parameters for polyethylene pipe (i.e., Wall Crushings, Wall Buckling, etc.) as per the various SDR (wall thickness) ratings.
Striped Duct - Three longitudinal stripes can be extruded on any standard size of smooth duct of any color. Stripes are approximately 1/8-inch in width (varying slightly according to the duct size). There is no additional charge for Striped Duct.
Sequentially-Marked Duct - Duct can be ordered with numbering - every two feet - printed on the duct.
TYPICAL THERMAL AND ELECTRICAL PROPERTIES OF HDPE DUCT
Vicat Softening Temp.
ASTM D 1535
Heat Distortion Temp.
ASTM D 648
ASTM D 696
1 x 10-4
ASTM C 177
TYPICAL PHYSICAL PROPERTIES: HIGH MOLECULAR WEIGHT HDPE PRODUCTS
Melt Index i2.16
D 1238 (E)
Tensile Yield Strength
Elongation at Break
D 638 (Speciman I)
Tens. of Modulus of Elast.
Rockwell Hardness L
Shore Hardness D