Infrastructure & Mobility

Railroads

Drainage of ballast and protection of cables for permanent way

The Challenge

Railways and metros require drainage of ballast and protection of signal and power cables along the tracks. Failures cause operational delays, safety risks, and regulatory fines.

Techduto provides corrugated HDPE pipes for longitudinal drainage alongside the permanent way and railway signal cable protection. The Techdreno KC with integrated filters ensures greater durability in drainage, eliminating the need for geotextile.

Our products are lightweight, resistant to vibration, and easy to install in short operational intervals — ideal for permanent way maintenance without prolonged track closure.

Techduto Solutions for Railroads

Recommended lines, uses and differentials

Line	Main Use	Differential
Techduto NBR	Protection of signaling cables along the tracks	Mechanical resistance and flexibility, absorbs vibrations
Techduto DW	Passage of power and fiber optic cables	Smooth interior for quick passage of heavy cables
Techdreno NBR/DW	Longitudinal drainage alongside the tracks	Removes water from the ballast, prevents fine pumping
Techdreno KC	Drainage with greater durability	Integrated micro-filters dispense with geotextile — longer service life
DutoSeal Tape	Protection of cables in curves and deviations	Flexible corrugated tape for curved sections

Challenges and Solutions

How Techduto addresses each challenge in Railroads

Insufficient ballast drainage

Techduto NBR with SN8 drains the railway ballast, preventing pumping of fines and degradation of the track.

Exposed signaling cables

DutoSeal Tape and NBR protect signaling and power cables from moisture, rodents, and vibration.

Installation in short operational window

HDPE is 60% lighter than concrete — installation up to 3× faster in maintenance intervals.

Constant vibration of compositions

HDPE absorbs vibration without cracking or losing tightness, unlike rigid pipes.

Frequently Asked Questions

Common questions about Railroads

It is recommended to use SN8 for roads with traffic of loaded compositions. The Techduto NBR and DW meet this specification with NBR 15073 certification.

Yes. HDPE is a flexible material that absorbs vibrations without cracking, unlike concrete or ceramic pipes that can fracture with the passage of compositions.

Our HDPE pipes are lightweight and quick to install. The work can be done in short maintenance windows, without the need for prolonged closure of the road.

Yes. We supply the main railway concessionaires in Brazil, with logistics for large linear works.