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| Product Type: | PE Pipe |
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PUR Spray PE Wrap Pre-Insulated Pipe Production Line
Energy-Efficient Solution for Heating, Cooling & Oil Transport Applications
The Polyurethane (PUR) Spray Polyethylene (PE) Wrap Pre-Insulated Pipe Production Line is designed for manufacturing polyurethane pre-fabricated direct-buried thermal insulation pipes. These pipes are widely used in:
District heating networks
Industrial cooling systems
Crude oil and chemical transportation pipelines
The rigid polyurethane spray PE-wrapped pre-fabricated direct-buried insulation pipe is composed of:
Working Steel Pipe - conveys the medium
Rigid Polyurethane Foam Insulation Layer - provides thermal insulation
Polyethylene Outer Casing (wound) - offers mechanical protection and corrosion resistance
Application Scope
Anti-corrosion & thermal insulation pipelines for heating, cooling, and crude oil transportation
Medium temperature: ≤ 120°C (peak ≤ 140°C)
Medium pressure: ≤ 2.5 MPa
Installation methods: Direct burial (primary), trench laying, or overhead installation
Consistent and controllable polyurethane density
Void-free rigid polyurethane foam
High bonding strength: Shear strength (friction) between foam and PE casing > 200 KPa
Customizable design: Adjustable thickness of insulation layer and PE casing
High degree of automation in production
| No. | Nominal Diameter (DN) | Insulation Layer Thickness (mm) | Outer Casing Diameter (mm) | Min. Outer Casing Thickness (mm) |
|---|---|---|---|---|
| 1 | 500 | 30-60 | 598-658 | 4.5 |
| 2 | 600 | 30-60 | 700-760 | 5.0 |
| 3 | 700 | 30-60 | 790-850 | 5.0 |
| 4 | 800 | 30-60 | 891-951 | 5.5 |
| 5 | 900 | 30-60 | 992-1052 | 6.0 |
| 6 | 1000 | 30-60 | 1093-1153 | 6.5 |
| 7 | 1100 | 30-60 | 1194-1254 | 7.0 |
| 8 | 1200 | 40-100 | 1316-1436 | 8.0 |
| 9 | 1400 | 50-100 | 1538-1678 | 9.0 |
| 10 | 1620 | 50-100 | 1738-1840 | 10.0 |
The spray and winding production process ensures:
Uniform insulation layer density
Improved product quality
Optimized production efficiency
Lower production costs
Steel Pipe Outer Wall Shot Blasting Line
Prepares steel pipe surface for optimal polyurethane bonding
Polyurethane Spray Molding Line
High-pressure spray technology for uniform foam application
Polyethylene Sheet Extruding & Winding Line
Continuous extrusion and spiral winding of PE casing
Water Cooling Line
Controlled cooling for dimensional stability
End-Cutting Equipment
Precision trimming of finished pipes
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