Engineers rely on post tension ducts (PT ducts) to enhance structural integrity in high-stress concrete applications. These corrugated sheathing systems protect prestressing tendons while enabling efficient grout injection, ensuring long-term durability.
Applications
- Bridges & Highways: Resist dynamic loads and seismic forces.
- High-Rise Buildings: Reduce slab thickness while maintaining strength.
- Parking Structures: Mitigate cracking from heavy cyclic loads.
Engineering Solutions
- Corrosion Protection: HDPE/steel hybrid designs prevent tendon degradation.
- Grout Compatibility: Smooth inner lining ensures void-free grout flow.
- Modular Joints: Pre-fabricated couplers reduce on-site labor by 30%.

The key benefits and features for Corrugated Ducts
☆ Wide range of diameter available (ID 50mm to ID 120mm).
☆ Quantity as per the site requirement can be manufactured.
☆ Easy benchmarking and thus production schedule.
☆ Customer friendly – Bendable and can be cut as per customer requirement.
☆ Ease of placement at site: Durable and tough.
☆ Corrosion protection with hot dip zinc coating.
Smart Functionality
- Embedded Sensors: IoT-enabled ducts monitor tendon tension in real-time (optional).
- RFID Tagging: Track installation progress via digital logs.
Technical Notes
- Installation Tip: Use helical spacers to maintain duct alignment during concrete pour.
- Grouting Alert: Low-viscosity grouts (≤12 sec flow time) recommended for narrow ducts.
Why Choose Us?
- Certified Quality: Third-party tested to exceed ASTM/EN standards.
- Customization: Tailor duct profiles for complex geometries.
- Global Support: 24/7 technical advisory from licensed engineers.