Continuous PU Foaming Insulation Pipe Jacket Shell Extrusion Line

High Efficiency PU Insulation Plastic Pipe Making Machine (Pipe Dia. 48-630mm)

This Continuous PU Foaming Insulation Pipe Jacket Extrusion Line is specially designed for the production of small and medium diameter pre-insulated PU thermal pipes, with jacket pipe diameters ranging from 48mm to 630mm. It integrates HDPE jacket pipe extrusion, epoxy coating, adhesive wrapping, and continuous PU foaming technology into a fully automated continuous production system, ensuring high efficiency, consistent quality, and reduced labor cost.

Widely used for:

• District heating and cooling pipelines

• Underground thermal insulation piping systems

• Pre-insulated oil and chemical transport pipelines

Production Process Flow

1. Pipe loading

2. External derusting

3. Label application on pipe side

4. Intermediate pipe heating

5. External epoxy powder coating

6. Water cooling

7. Coating layer inspection

8. Hot melt adhesive application

9. HDPE jacket pipe extrusion and coating

10. Continuous PU foaming filling

11. Foam rectification

12. Pipe edge trimming

13. Final water cooling

14. Pipe end sealing (heat shrink)

15. Pipe unloading

Technical Specifications

• Applicable Pipe Diameter: 48mm - 630mm

• Extrusion Material: HDPE pellets

• Insulation Material: Polyurethane (PU) foaming agent

• Coating Materials: Hot melt adhesive, Epoxy powder

• Power Supply: 380V (-10% ~ +5%), 50Hz, 3-phase

• Total Installed Power: Approx. 850 KW

• Cooling Water Requirements:

  • Temperature: ≤15ºC

  • Pressure: 0.15-0.2 MPa

  • Flow Rate: 0.5 m³/min

Operating Conditions

• Installation Site: Indoor

• Ambient Temperature: 0-30ºC

• Humidity: ≤85% (no condensation)

• Safety: Non-hazardous operation environment

• Continuous production for higher productivity

• Strong insulation bonding, stable foam density

• Online coating inspection and sealing ensures pipe durability

• Suitable for customized PU insulated pipe manufacturing projects

collaborating closely with Beijing University of chemical technology, Qingdao university of technology and scientific research institutions. by absorbing advanced technology home and abroad, after 20 years of endeavor we now rank one of the top 3 manufacturers in the industry in China. Huashida machines have been well received in Saudi Arabia, Kazakhstan, Uzbekistan, United Arab Emirates, Turkey, Russia, etc.

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Certifications

Pre-Insulated Pipe Production Line

Pre-insulated Pipe Manufacturing Line

Continuous PU Foaming Pre-Insulated Pipe Production Line For HDPE Outer Jacket And Thermal Insulation Images