I. Equipment Overview & Core Functions
General pipe extruder production lines are core plastic processing systems for manufacturing PVC, PE, PP, PPR, ABS, and other material pipes. They serve civil and industrial applications including:
Building drainage/supply pipes
Gas pipelines
Cable conduits
Key Capabilities:
High-precision plastification control
Multi-die compatibility (solid, corrugated, composite pipes)
Continuous production for Ø50-200mm pipes
II. Core Components & Technologies
1. Main System
| Component | Specification |
|---|---|
| Screw Design | Single/twin screw (Ø50-75mm); Conical for PVC, parallel for PE/PP |
| Temperature Control | ±1°C accuracy; Zoned heating (4-6 sections) + air cooling |
| Drive System | Servo/VFD motor; ≤1% speed fluctuation; Up to 30m/min line speed |
2. Die & Flow Optimization
Multi-cavity dies: “Four-out” high-yield mode for Ø16-200mm pipes
Co-extrusion heads: Multi-layer/color capability (e.g., PPR + fiberglass reinforcement)
3. Cooling & Sizing
Vacuum spray tanks (SUS304; -0.08~-0.1MPa vacuum)
3D adjustment for complex profiles (±0.1mm roundness tolerance)
4. Haul-off & Cutting
Caterpillar haul-offs (8kN force; ≤0.1% sync error) for rigid pipes
Precision cutting: Circular saw (±0.5mm) for small pipes; Orbital cutter (±1mm) for large pipes
III. Material & Process Features
Material Properties
| Material | Processing Requirements |
|---|---|
| Rigid PVC | Conical twin-screw + degassing system |
| PE/PPR | Single-screw + melt gear pump (<5% pressure fluctuation) |
| Functional | Optimized screw mixing (e.g., antibacterial PE) |
Production Process
Pre-processing: High-speed mixing (500-1000 rpm; ≤0.02% moisture)
Extrusion: Screw speed 20-90 rpm; Head pressure 15-40 MPa; Melt temp ±2°C
QC: Laser micrometer (0.01mm precision) + IR thermometer + PLC feedback
IV. Applications & Selection Guide
| Sector | Product Examples |
|---|---|
| Construction | PVC drainage (Ø50-160mm); PPR pipes (Ø50-110mm) |
| Municipal | HDPE corrugated (Ø16-63mm); PE gas (Ø50-200mm) |
| Industrial | PPS heat-resistant (Ø50-100mm); PU hydraulic (Ø6-50mm) |
V. Industry Trends
Smart Manufacturing: IoT remote monitoring + torque anomaly alerts
Energy Efficiency: Electromagnetic heating (30-40% energy savings)
Advanced Co-extrusion: 5-layer structures (barrier/adhesive/core layers)
Sustainability: Biodegradable materials (e.g., PLA) compatibility
Conclusion
General pipe extruder production lines achieve full-range production (capillary to large engineering pipes) through modular design (e.g., quick-die-change) and intelligent control. Future evolution focuses on energy efficiency and material versatility.
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