48-630mm Continuous PU Foam Pre Insulated Pipe Production Equipment

This Continuous PU Foaming Insulation Pipe Jacket Extruder is a fully automated production line designed for manufacturing polyurethane (PU) insulated plastic pipes. It is suitable for producing insulation pipes with diameters ranging from 48mm to 630mm, commonly used in heating systems, oil pipelines, and other thermal insulation applications.

The machine integrates multiple processes into one continuous production line, including outer protective pipe extrusion, epoxy coating, adhesive application, PE jacketing, and PU foaming, ensuring high efficiency and consistent product quality. The inner pipe, insulation layer, and outer protective layer are tightly bonded together, providing excellent thermal insulation and durability.

With a high level of automation, this equipment significantly reduces manual labor and improves production stability and safety. It is ideal for modern pipeline insulation projects that require efficient and reliable manufacturing solutions.

• Suitable for pipe diameter range: 48-630mm
• Fully automatic production line for high efficiency and stable output
• Integrated process: coating, bonding, extruding, and foaming in one line
• High-quality polyurethane (PU) foam insulation
• Ensures tight bonding between inner pipe, insulation layer, and outer PE jacket
• Energy-saving and environmentally friendly design
• Widely used in district heating, oil transportation, chemical, and industrial piping systems

Production Technology Process:

1. Load raw pipe
2. External derusting
3. Apply label on pipe side
4. Intermediate heating
5. Apply external epoxy coating
6. Water cooling
7. Coating layer inspection
8. Apply adhesive on epoxy layer
9. PE jacket extrusion coating
10. PU foaming injection
11. Foaming rectification
12. Pipe edge cutting
13. Final water cooling
14. Heat shrink sealing at pipe edges
15. Download finished pipe

Working Conditions:

• Installation environment: Indoors
• Ambient temperature: 0°C - 30°C
• Relative humidity: Up to 85% (no condensation)
• Power supply: 3-phase, 380V (-10%, +5%), 50Hz
• Total installed power: Approx. 850 kW
• Cooling water system:
  • Temperature ≤ 15°C
  • Pressure: 0.15-0.2 MPa
  • Flow rate: ≥ 0.5 m³/min

• District heating pipelines
• Hot water transportation systems
• Oil and gas industry pipelines
• Chemical and industrial fluid transportation
• Thermal insulation engineering

Why Choose Our Machine?

√ Stable performance and high automation
√ High-quality insulation effect with precise control
√ Customizable according to customer requirements
√ Professional technical support and after-sales service