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we supply high-density, small-diameter ducts (40mm - 130mm) optimized for container loading, and we provide the Duct Making Machinery for anything larger. The Real Profit: Our compact machinery allows you to transform lightweight steel strips into thousands of meters of ducting right on your job site. The equipment typically pays for itself within a single bridge or high-rise project by eliminating international logistics costs and transit damage.
Prestressed Ducts
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Standard Diameter Range: 40mm, 50mm, 65mm, 75mm, 90mm, 110mm, 130mm. (Optimized for maximum container utilization).
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Application: Specifically engineered for post-tensioning tendons in bridges, dams, and large-scale concrete structures.
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Material: Premium galvanized steel strip (0.22mm - 0.40mm thickness) for superior corrosion resistance and grout bonding.
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Anti-Crush Design: Enhanced corrugation profile to withstand the pressure of wet concrete without deforming.
Duct Making Machine
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Localized Production: Produce any diameter (up to 160mm or more) directly at the precast yard or bridge deck.
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Compact & Portable: Designed for easy relocation between different project sites.
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One Machine, All Sizes: Easily adjustable to produce the full range of diameters needed for your project.
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High ROI: One ton of steel strip creates a vast length of ducting. By importing raw material instead of finished pipes, you reduce your shipping volume by over 90%.
Technical Overview
| Category | Specification / Capability |
| Product Type | Round & Flat Post-tensioning Ducts |
| Imported Diameter Range | 40mm to 130mm (Small Diameter Focus) |
| Machine Production Range | 35mm – 160mm (Adjustable) |
| Material Standard | Galvanized Steel (ASTM / EN Standards) |
| Production Speed | 4 – 15 meters per minute |
| Steel Strip Compatibility | 0.2mm to 0.5mm Thickness; 35mm to 55mm Width |
Why LUGO？
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Logistics Specialists: We calculate the most cost-effective "Mix-Loading" plans (nesting smaller ducts inside larger ones).
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Project Expertise: We supply the exact specifications required by international contractors for post-tensioning integrity.
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Full Supply Chain: We don't just sell the machine; we provide the Galvanized Steel Strips and technical training to get your production line running in days.