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Communication Pipeline Series
HDPE Silicon Core Pipe
Standard: JT/T 496-2018
1. Size: 32/26, 34/28, 40/33, 46/38, 50/41, 63/54, etc.
2. Length: Coil Length 1000m-3000m A Roll.
3. Material: PE80, PE100 & Silicon materials.
4. Standard: GB/T 24456-2009, JT/T 496-2018.
5. Delivery: 10-20 days depending on the total quantity.
- Introduction
- Feature
- Specification
- Physical Parameter
- Application
- Download
Introduction
HDPE Silicon Core Pipe is a high-density polyethylene (HDPE) pipe with a silicon-core structure. It consists of a silicon core embedded inside an HDPE outer pipe, forming a double-layer composite structure. This pipe is mainly used for the protection and installation of communication cables. It provides a reliable protective solution to prevent cable damage during installation and delivers excellent mechanical and shielding performance.
Description of HDPE (High Density Polyethylene) Silicon Core Pipe
HDPE silicon-core pipes are specially designed as protective tubing for communication optical and electrical cables. These pipes are formed via co-extrusion of HDPE and silicon core materials, which creates an inner surface with an ultra-low friction coefficient. Thanks to their durability and the lubricating, low-friction solid channel inside, HDPE silicon-core pipes offer exceptional convenience for cable installation. They represent one of the most advanced solutions for communication cable protection worldwide.
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Feature
Benefits of (High Density Polyethylene) Silicon Core Pipe
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The inner wall of the HDPE silicon core pipe is integrated with a solid permanent lubricant.
The inner silicon core layer of the HDPE silicon core pipe is co-extruded synchronously with the HDPE pipe wall. It is evenly distributed across the entire inner surface, resistant to peeling or delamination, and boasts the same service life as the pipe itself.
The inner silicon core layer of the HDPE silicon core pipe shares identical mechanical and physical properties with the pipe body.
The friction performance of the inner silicon core layer remains consistent over time, allowing cables to be pulled through and retrieved repeatedly inside the pipe.
The inner silicon core layer is non-reactive with water, enabling pipe flushing with water in the event of an accident.
The HDPE silicon core pipe features a small bending radius (10 times its outer diameter).
The pipe can be bent freely to adapt to the working environment and terrain conditions without any pre-treatment.
Specification
| Specification | Outside diameter dem/mm |
Wall thickness and tolerance mm |
Out-of-roundness % |
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| Nominal value | Tolerance | Standard Value | Tolerance | Before Coiling | After Coiling | |
| ∅16/13a | 16 | +0.2 | 1.5 | +0.20 | ≤3 | ≤5 |
| 0 | -0.15 | |||||
| ∅25/21b | 25 | +0.3 | 2.0 | +0.20 | ≤3 | ≤5 |
| 0 | -0.15 | |||||
| ∅32/26 | 32 | +0.3 | 2.5 | +0.30 | ≤2 | ≤3 |
| 0 | -0.20 | |||||
| ∅33/28×4c | 33 | - | 2.5 | +0.30 | ≤2 | ≤3 |
| -0.20 | ||||||
| ∅34/28 | 34 | +0.3 | 3.0 | +0.30 | ≤2 | ≤3 |
| 0 | -0.15 | |||||
| ∅38/33×5c | 38 | - | 2.5 | +0.30 | ≤2.5 | ≤3.5 |
| -0.20 | ||||||
| ∅40/33 | 40 | +0.4 | 3.5 | +0.35 | ≤2.5 | ≤3.5 |
| 0 | -0.20 | |||||
| ∅41/36×6(7)c | 41 | - | 2.5 | +0.35 | ≤2.5 | ≤3.5 |
| -0.20 | ||||||
| ∅46/38 | 46 | +0.4 | 4.0 | +0.35 | ≤3 | ≤5 |
| 0 | -0.20 | |||||
| ∅50/41 | 50 | +0.5 | 4.5 | +0.40 | ≤3 | ≤5 |
| 0 | -0.30 | |||||
| ∅63/54 | 63 | +0.6 | 5.0 | +0.40 | ≤3 | ≤5 |
| 0 | -0.30 | |||||
| Note: 1. The specification dimensions and tolerances of ribbed pipes shall be determined through negotiation between the supplier and the buyer. 2. The specification dimensions, model numbers and tolerances of other products shall be determined through negotiation between the supplier and the buyer. |
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| a Microducts for installation inside bundle ducts. b Communication sub-ducts suitable for installation inside large-diameter protective ducts. c Outer sheaths suitable for bundle ducts. |
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Please contact us by email: sales@hengdepipes.com or WhatsApp: +86 15265578500.
Physical Parameter
| Physical and chemical properties of HDPE silicon core tube JT/T 496-2018 |
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| Item | φ32/26 | φ34/28 | φ40/33 | φ46/38 | φ50/41 | φ63/54 | ||||
| Outer wall hardness/HD | ≥59 | |||||||||
| Inner wall friction coefficient | static state：≤0.25（Plate method, standard test rod for PE-HD） | |||||||||
| dynamic condition：≤0.15 | ||||||||||
| Tensile yield strength/MPa | ≥21 | |||||||||
| Elongation at break/% | ≥500 | |||||||||
| Maximum traction load/N | ≥5000 | ≥6000 | ≥8000 | ≥10000 | ≥11000 | ≥12000 | ||||
| Cold bending property（mm)） | 300 | 300 | 400 | 500 | 625 | 750 | ||||
| Ring-stiffness/ （kN/㎡） |
≥40 | ≥50 | ≥40 | ≥30 | ||||||
| Recovery rate | When the deformation of the outer diameter is 50% of the original outer diameter under vertical pressure, it is immediately unloaded, the pattern is not broken and not stratified, and the inner and outer diameter can naturally recover to more than 85% of the original in 10min. | |||||||||
| Resistance to drop hammer impact | Normal Temperature | At a temperature of 23°C and a height of 2 m, use a 15.3 kg heavy hammer to impact 10 samples, a single sample is considered to pass if it does not crack or if the crack width is no more than 0.8 mm, the number of passing samples should be no less than 9. | ||||||||
| Low Temperature | Temperature -20°C, height 2m. Using a 15.3kg heavy hammer to impact 10 samples, the number of samples without any cracking should be no less than 9. | |||||||||
| Resistant to water pressure and sealing performance | Under the conditions of a temperature of 20°C and a pressure of 50 kPa, there was no leakage after being maintained for 24 hours. Neither the connector nor the pipe plug of the pipe sample leaked. | |||||||||
| Crack Resistance Strength(MPa) | No obvious bulging, no leakage, no rupture. | |||||||||
| Connection force with pipe joint(N) | ≥4300 | ≥4300 | ≥6700 | ≥8000 | ||||||
| Longitudinal shrinkage ratio/% | ≤3.0 | |||||||||
| Brittle Temperature(℃） | -75 | |||||||||
| Resistance to environmental stress cracking | 48h, failure rate≤20% | |||||||||
| Melt flow rate（MFR)(g/10min) | MFR(190/2.16)≤0.5 | |||||||||
| Resistance to thermal stress cracking | 168h,failure rate≤20% | |||||||||
| Power frequency breakdown strength(MV/m) | ≥24 | |||||||||
| Resistant to corrosion by chemical media | Immerse the samples in 5% NaCl, 40% H₂SO₄, and 40% NaOH solutions for 24 hours, respectively, and there should be no noticeable fading or corrosion。 | |||||||||
| Resistance to hydrocarbons | After soaking the sample in heptane for 720 hours, an external force of 528N is applied. After unloading, the sample remains undamaged, with permanent deformation not exceeding 5%。 | |||||||||
Feel free to contact us for product catalogs, quotations and professional technical support.
Please contact us by email: sales@hengdepipes.com or WhatsApp: +86 15265578500.
Application
It is suitable for outdoor communication cables, public information networks, cable television systems, highways and other communication cable transmission projects.
Feel free to contact us for product catalogs, quotations and professional technical support.
Please contact us by email: sales@hengdepipes.com or WhatsApp: +86 15265578500.
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