A specialized corrugated pipe machine engineered for post-tensioning duct production. We provide both Spiral Forming for classic round pipes and Mould Block pipe corrugator technology for high-precision, zero-rebound flat ducts, meeting the stringent demands of modern highway, railway, and mega-bridge construction.
For Round & Pressed Flat Ducts: Utilizes advanced spiral rotation forming. High-speed, continuous production ideal for standard post-tensioning HDPE applications with extremely low mold costs.
For Flat & Round PT Ducts: Adopts precision pipe corrugator mould block technology. Perfect for producing flat plastic PT ducts with extremely uniform wall thickness, zero rebound, and high crush resistance.
HDPE corrugated pipes produced meet stringent national and international standards for railway, highway, and mega-bridge post-tensioning concrete projects.
Complete 6-stage setup dedicated to high-speed round HDPE PT duct manufacturing.
22kW AC motor with 32:1 L/D ratio screw, providing highly stable and efficient plasticization for HDPE/PP materials.
Specially designed spiral runner structure ensures uniform melt distribution, forming a perfect parison for the subsequent rotary shaping.
The core unit. Utilizes specialized rotary forming mandrels to continuously shape the extruded melt into standard round corrugated profiles.
Provides stable, variable-frequency controlled pulling force, ensuring pipe diameter consistency during the high-speed cooling process.
Precision chipless cutting unit triggered by length sensors, providing smooth and accurate cuts without material waste.
Automated coiling station designed for continuous and neat packaging of flexible plastic post-tensioning ducts, ensuring efficient site handling.
Advanced 8-stage configuration offering unmatched wall thickness control for zero-rebound flat plastic PT ducts.
22kW AC motor with robust temperature control, ensuring continuous high-volume material extrusion into the corrugator.
Precision-engineered straight-through die head adapted for seamless integration with the corrugator blocks.
Utilizes precision-machined aluminum alloy mould blocks running on a chain gear system to press-form flat or round corrugated profiles.
Stainless steel spray cooling tank rapidly reduces pipe temperature, solidifying the shape to prevent deformation of flat ducts.
Heavy-duty caterpillar puller synchronized with the corrugator speed.
Automated saw cutter for precise length separation.
Standard unloading for rigid straight lengths.
Optional dual-station coiler for continuous packaging of flexible flat duct rolls.
| Specification Parameter | Spiral Forming (Model A1) | Spiral Forming (Model A2) | Mould Block (Model B) |
|---|---|---|---|
| Pipe Range | Φ 20 - 150mm | Φ 40 - 200mm | Flat: Max 110mm Width Round: Max Φ 110mm |
| Output Capacity | 60 - 80 kg/h | 80 - 120 kg/h | 60 - 80 kg/h |
| Max Line Speed | 3 m/min | 1.5 - 3 m/min | 3 - 5 m/min |
| Total Installed Power | ~65 kW | ~75 kW | ~65 kW |
| Vacuum Pump Power | 5.5 kW | 7.5 kW | 11 kW |
Make an informed decision based on your material, budget, and post-tensioning project requirements.
The Accessible Workhorse: The spiral system features a simple equipment structure, easy maintenance, and user-friendly operation. Its biggest advantage is cost-efficiency: a single machine can be equipped with various diameter molds at an extremely low cost.
It is capable of producing flat pipes through an additional heating and pressing process.
⚠️ Technical Limitation: When producing flat ducts via pressing, it is only suitable for specific materials. Many HDPE materials exhibit a "memory effect" and will gradually rebound into an oval shape over time, failing strict engineering inspections.
The High-End Standard: Representing a higher initial investment and requiring more complex operational procedures, the mould block system directly shapes the plastic PT duct profile inside precision molds.
The Market Favorite for Flat Ducts: Despite the higher cost, it remains highly welcomed by the high-end market. The flat pipes produced boast absolute dimensional stability with zero rebound risk. Furthermore, under the exact same ring stiffness requirements, the corrugated pipes are significantly lighter, saving massive raw material costs in the long run.
Our engineers can help you select the ideal corrugated pipe machine for your bridge or highway post-tensioning project. Contact us for detailed specifications and a tailored quote.
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