Structure and materials
The pipes are manufactured from high-density polyethylene (HDPE) and feature a smooth surface. The material ensures mechanical stability, chemical resistance and long-term durability in underground installation conditions.
Smooth HDPE pipes for protection of electrical and telecommunication cables
Smooth HDPE pipes NTET for the protection of electrical and telecommunication cables comply with CEI EN 61386-24 and are designed for underground installation, offering high resistance to crushing and impact.
Depending on soil conditions and applied loads, installation can be carried out using traditional trenching methods or trenchless No-Dig techniques, including HDD (horizontal directional drilling) and microtunneling, for crossings under roads, railways, waterways and environmentally protected areas without open excavation.
Variants tables
| Parameter | Value | Unit |
|---|---|---|
| Material | High-density polyethylene (HDPE) | |
| Surface | Smooth | |
| Reference standard | CEI EN 61386-24 | |
| Crushing resistance class | Type 250 | |
| Crushing resistance (23 °C) | ≥ 250 N | |
| Impact resistance | Compliant with CEI EN 61386-24 | |
| Density | ≥ 0,948 g/cm³ | |
| Yield stress (23 °C) | ≥ 19 N/mm² | |
| Elastic modulus (23 °C) | > 1000 MPa | |
| Elongation at break (23 °C) | ≥ 350 % | |
| Linear thermal expansion coefficient | ~ 0,2 mm/m·K | |
| Thermal conductivity | ~ 0,4 W/m·K | |
| Surface resistivity | > 10¹³ Ω | |
| Available nominal diameters | DN 40 – 250 mm | |
| Supply | Bars / Coils (up to DN 160) | |
| Jointing systems | Butt welding, electrofusion, mechanical joint |
| Parameter | Value | Unit |
|---|---|---|
| Material | High-density polyethylene (HDPE) | |
| Surface | Smooth | |
| Reference standard | CEI EN 61386-24 | |
| Crushing resistance class | Type 450 | |
| Crushing resistance (23 °C) | ≥ 450 N | |
| Impact resistance | Compliant with CEI EN 61386-24 | |
| Density | ≥ 0,948 g/cm³ | |
| Yield stress (23 °C) | ≥ 19 N/mm² | |
| Elastic modulus (23 °C) | > 1000 MPa | |
| Elongation at break (23 °C) | ≥ 350 % | |
| Linear thermal expansion coefficient | ~ 0,2 mm/m·K | |
| Thermal conductivity | ~ 0,4 W/m·K | |
| Surface resistivity | > 10¹³ Ω | |
| Available nominal diameters | DN 40 – 250 mm | |
| Supply | Bars / Coils (up to DN 160) | |
| Jointing systems | Butt welding, electrofusion, mechanical joint |
| Parameter | Value | Unit |
|---|---|---|
| Material | High-density polyethylene (HDPE) | |
| Surface | Smooth | |
| Reference standard | CEI EN 61386-24 | |
| Crushing resistance class | Tipo 750 | |
| Crushing resistance (23 °C) | ≥ 750 N | |
| Impact resistance | Compliant with CEI EN 61386-24 | |
| Density | ≥ 0,948 g/cm³ | |
| Yield stress (23 °C) | ≥ 19 N/mm² | |
| Modulo di elasticità (23 °C) | > 1000 MPa | |
| Elastic modulus (23 °C) | ≥ 350 % | |
| Elongation at break (23 °C) | ~ 0,2 mm/m·K | |
| Linear thermal expansion coefficient | ~ 0,4 W/m·K | |
| Thermal conductivity | > 10¹³ Ω | |
| Surface resistivity | DN 40 – 250 mm | |
| Supply | Bars / Coils (up to DN 160) | |
| Jointing systems | Butt welding, electrofusion, mechanical joint |
Technical specifications – Smooth HDPE pipes for electrical and telecommunication cable protection
Functionality
The pipes are designed for the mechanical protection of cables during underground installation. They are suitable for both traditional trench installation and No-Dig techniques, such as horizontal directional drilling and microtunneling, allowing trenchless crossings.
Compliance
Smooth HDPE pipes NTET for cable protection comply with CEI EN 61386-24 for underground installation. Declared performance in terms of crushing resistance and mechanical properties is detailed in the relevant technical data sheet.
Versatile applications
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Protection of underground electrical cables
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Protection of telecommunication cables
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No-Dig crossings under roads, railways and waterways
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Civil and industrial infrastructures
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Underground technological networks
