PT ES
PT ES
Techduto Solution

Protect and Route Cables

Corrugated HDPE conduits for mechanical protection of electrical, telecom and fiber optic cables

Protect and Route Cables

The Challenge

Buried electrical, telecommunications and fiber optic cables need mechanical protection against impacts, moisture and interference. Without adequate protection, corrective maintenance is frequent and costly.

Techduto DW is a double-wall corrugated pipe designed specifically for underground cable protection. With a smooth interior for easy cable pulling and corrugated exterior for mechanical strength, it is the preferred solution for energy utilities, telecom companies and renewable energy parks.

80%
reduction in corrective maintenance with adequate protection
DN32-250
diameter range for any cable cross-section
100%
recyclable — Techduto environmental commitment

Challenges & Solutions

How Techduto solves each challenge in Protect and Route Cables

Mechanical damage

Techduto DW with corrugated outer wall absorbs excavation impacts and soil pressure, shielding your cables.

Water infiltration

Techduto Tape seals all connections with permanent adhesion, preventing water and moisture from reaching cables.

Repair cost

With Techduto NBR and DW, locating and replacing cables is simple — just pull through the smooth interior without digging a new trench.

How We Apply

Techduto 3-step methodology

01

Design

Definition of route, depth and conduit diameter based on the total cross-section of cables to protect.

02

Installation

Trench opening, Techduto DW laying and cable pulling through the smooth interior — up to 30% faster.

03

Sealing

Connection sealing with Techduto Tape, backfill and compaction for permanent protection.

FAQ

Common questions about Protect and Route Cables

Techduto DW has a double wall: corrugated exterior for mechanical strength and smooth interior to facilitate cable pulling. Rigid conduits are heavier and more expensive.
Yes. Techduto DW is the most widely used solution for cable protection in renewable energy parks in Brazil, meeting NBR standards.
The diameter depends on the total cable cross-section. The practical rule is that cables should occupy no more than 40% of the conduit's internal cross-section.
Yes. The Techduto NBR line is certified per ABNT NBR 15715:2020. Techduto participated in the technical drafting of this standard and maintains continuous compliance testing.
Seal all joints with Techduto Tape (HDPE-specific adhesive tape), which creates permanent waterproof sealing against water, moisture and insects.
Standard NBR is for buried sections without sun exposure. UV line has anti-UV additive for sun-exposed sections (tracker, string box, rooftop). AC line has flame-retardant additive required near inverters, transformers and electrical rooms.

Why Techduto and not a reseller: since 1986, when it built Brazil's first corrugating machine by hand, Techduto has designed and manufactured its own line of corrugated pipes — it doesn't resell, it produces. Today, with factories in São José dos Campos (SP), Recife (PE) and Primavera do Leste (MT), the engineering behind Techdreno and Drainage Geocomposite is entirely its own. See our full history →

NBR 15715 × NBR 5410: what each standard covers

NBR 15715 is the conduit-specific standard — geometry, compression resistance, impact resistance. NBR 5410 is the general low-voltage electrical installation standard: circuit sizing, conductor cross-section, overcurrent protection — it references the use of conduits but does not specify the conduit itself. A complete electrical project follows both: NBR 5410 defines the installation, NBR 15715 ensures the chosen conduit withstands it.