HDPE fiber optic duct: monoduct, biduct, triduct
Virgin HDPE, 40 × 34 × 3 mm, with internal ribs, laser-marked footage, and rolls of 500 to 1000 m.
- Virgin HDPE, no recycled content
- NTE INEN 1740
- Factory test report
HDPE duct at a glance
Test results
Factory report against each test requirement. Conditions: 23 ± 2 °C, 50 ± 5% relative humidity.
| Test | Requirement | Monoduct | Biduct | Triduct |
|---|---|---|---|---|
| Density | min. 0.94 g/cm³ | > 0.95 | > 0.95 | > 0.95 |
| Melt flow index (ASTM D1238) | max. 1.0 g/10 min | 0.36 | 0.36 | 0.36 |
| Tensile strength (ASTM D638) | min. 19 MPa (monoduct: 20) | > 20 MPa | > 19 MPa | > 19 MPa |
| Carbon black (INEN 1740) | 2.5 ± 0.5% | 2.65% | 2.65% | 2.65% |
| Elongation at break | min. 350% | 664% | 664% | 721% |
| Vicat softening (5 kg) | min. 77 °C | 78.4 °C | 78.4 °C | — |
| Ring stiffness (ISO 9969) | SDR 26 | — | — | > 4.0 kN/m² |
| Longitudinal reversion | ± 3% | 0.67% | 0.67% | 0.67% |
| Puncture (2 kg / 500 mm) | No puncture | Pass | Pass | Pass |
| Impact | Internal reduction < 50% | 25.5% | 25.5% | 25.5% |
| Compression (245 N) | Internal reduction < 5% | 3.2% | 3.2% | 3.2% |
| Low-temperature brittleness (−14 °C) | No cracking | Pass | Pass | Pass |
Need pricing on HDPE fiber duct?
Send us the configuration, meters, and roll count. We reply with a firm quote and incoterms.
Monoduct vs. Biduct vs. Triduct
HDPE Monoduct
One cable, one path. The default for a single fiber route or a drop to a building.
HDPE Biduct
Two ducts in one trench: one for the cable going in now, one spare for the cable that comes later without digging again.
HDPE Triduct
Three ducts in a single pull, for backbone routes planned to carry more than one cable.
Buying HDPE Fiber Optic Duct Wholesale — FAQ
What is HDPE duct for fiber optic?
It is the protective pipe a fiber optic cable is pulled through underground. HDPE (high-density polyethylene) is flexible enough to come on a roll, so a crew lays hundreds of meters without a joint, and tough enough to take backfill, impact, and puncture. These run 40 × 34 × 3 mm in one, two, or three ducts.
Monoduct, biduct, or triduct — which one?
Count the cables the route will carry over its life, not just today. Monoduct is one path. Biduct puts a spare duct in the same trench, so the second cable goes in later without new civil work. Triduct gives three paths in a single pull for backbone routes. The trench is usually the expensive part, which is why the spare duct tends to pay for itself.
What do the internal ribs do?
A minimum of 18 longitudinal ribs on the monoduct and 20 on the biduct and triduct cut the contact area between the cable jacket and the duct wall. Less contact means less friction on the pull and better spread of pulling lubricant, which is what gets you longer pulls between handholes.
Is it virgin HDPE or recycled?
Virgin HDPE, no recycled material. Type III, density 0.94–0.96 g/cm³, with black masterbatch and antioxidant. Carbon black tested at 2.65% against a 2.5 ± 0.5% requirement, which is what protects polyethylene from UV while the rolls sit in the yard.
What standards and tests does it meet?
Manufactured under an integrated management system to NTE INEN 1740 and INEN 499, the Ecuadorian standards for polyethylene duct. The material is tested to ASTM D1248, D1238, and D638, and the triduct adds ring stiffness per ISO 9969. The results table above comes from the factory test report, and we send the report with the quote.
What roll lengths are available, and how is it packed?
Monoduct in rolls of 500 to 1000 m, biduct in 500 to 600 m, triduct in 500 m, all on request. Rolls ship strapped and stretch-wrapped with capped, taped ends and an ID sticker. The duct is laser-marked with footage every 1.5 m or less, so the crew knows how much is left on the roll.
Where do you ship it? Can I use it on a US project?
This line is distributed to Latin America and the Caribbean and is built to Ecuadorian INEN standards. For a US project, talk to us before you spec it. For LATAM and Caribbean networks it ships by the full container or mixed with fiber cable, TDP duct, or rigid PVC.
What is the minimum order to buy HDPE duct by the container?
No fixed minimum. The honest question is whether the math works for a full container of duct or whether a mixed container with fiber cable, TDP duct, or rigid PVC lands cheaper. Send the configuration, the meters, and the destination and we put the load together.
Request a Wholesale Quote
Tell us what you need. We come back with a firm quote with incoterms — the team that builds it is the same team that answers your questions.