PVC Pipe Extrusion Line Twin Screw Extruder Automatic Pipe Making Machine for Water Supply and Drainage Pipe Production

PVC-O Pipe Extrusion Line

The PVC-O Pipe Extrusion Line is a state-of-the-art production system engineered for manufacturing Molecular Oriented PVC (PVC-O) pipes, the latest evolution in PVC pipe technology. Unlike conventional PVC-U pipes, PVC-O pipes undergo a specialized biaxial stretching (orientation) process during production, which rearranges the long-chain PVC molecules in both axial and radial directions. This unique molecular orientation technology delivers pipes with 2-3 times higher strength, significantly improved impact resistance, and superior crack resistance compared to traditional PVC-U and PE pipes.

Our PVC-O pipe extrusion line integrates a conical twin-screw extruder, precise die head, vacuum calibration and cooling system, haul-off unit, planetary cutting machine, and automatic belling/socketing system into a fully automated continuous production line. The line is PLC-controlled with HMI touchscreen interface, enabling real-time monitoring, parameter adjustment, and data logging for consistent quality output.

Advantages

Optimized Twin-Screw Extruder: Special screw design for PVC-O compounds ensures uniform plasticizing, high output, and low energy consumption.
Precision Die Head: Spiral mandrel structure guarantees uniform melt distribution, precise wall thickness control, and minimal material waste during startup.
Vacuum Calibration & Cooling: Multi-chamber vacuum spray cooling tank with precise diameter control ±0.1mm tolerance.
Advanced Haul-Off System: Multi-track caterpillar haul-off with synchronized speed control, adjustable clamping force for different pipe sizes.
Planetary Cutting: Dust-free planetary cutter with automatic chip collection, ensuring square, burr-free cuts.
Automatic Belling: Inline Rieber-type socket forming system for push-fit joint pipes, compatible with international standards.

Applications
Municipal potable water supply networks
Agricultural irrigation systems
Mining industry slurry and water transport
Trenchless pipe laying and rehabilitation
Gas distribution pipeline networks
Sewer and drainage systems
Power and telecommunication cable protection conduits
High-pressure industrial fluid transport

1.Drinking Water Supply Industry
PVC-O pipes are the ideal choice for potable water distribution networks. Their smooth inner surface minimizes biofilm formation, the chlorine resistance ensures long service life (>50 years), and the thin-wall design maximizes water flow while minimizing pumping energy costs. ISO 16422 and EN 17176 certified pipes produced on our line meet global drinking water safety standards.

2. Mining Industry
In mining operations, pipes are subjected to extreme conditions — abrasive slurries, high pressure, and rough handling. PVC-O pipes offer the impact resistance needed to survive underground mining environments, with 3x better crack resistance than PVC-U. The lightweight design (50% lighter than equivalent PE pipes) also reduces transport and installation costs in remote mining locations.

3. Agricultural Irrigation
Large-scale irrigation projects require pipes that can handle variable pressure, ground movement, and long-distance water transport. PVC-O pipes' flexibility (≤15° bend without fittings), high flow capacity, and excellent fatigue resistance make them perfect for main and sub-main irrigation lines. The thin wall design maximizes internal diameter, reducing pumping costs over the irrigation system's lifetime.

4. Trenchless Installation & Rehabilitation
PVC-O pipes excel in trenchless pipe laying (horizontal directional drilling, pipe bursting, slip lining). Their high tensile strength withstands pulling forces during installation, while their flexibility allows navigation around underground obstacles. Cured-in-place rehabilitation of aging infrastructure using PVC-O liners extends pipe life by 50+ years with minimal surface disruption.

5. Gas Distribution Networks
PVC-O pipes manufactured on our extrusion line can be formulated for gas distribution applications, providing a corrosion-free alternative to steel pipes. The molecular orientation process eliminates micro-voids, creating an impermeable barrier suitable for natural gas and LPG transport at medium pressures.

6. Cable Protection & Conduit
For power transmission and telecommunications infrastructure, PVC-O conduits offer superior crush resistance and impact strength while being lightweight enough for easy installation in trenches and ducts. The smooth inner surface allows effortless cable pulling over long distances.