PUR Spray Polyethylene Wrapped Pre-Insulated Pipe Line for Heating Cooling Oil Pipeline
PUR Spray PE Wrap Pre-Insulated Pipe Production Line
Energy-Efficient Solution for Heating, Cooling & Oil Transport Applications
Production Line Introduction
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
Product Structure
The rigid polyurethane spray PE-wrapped pre-fabricated direct-buried insulation pipe is composed of:
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Working Steel Pipe - conveys the medium
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Rigid Polyurethane Foam Insulation Layer - provides thermal insulation
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Polyethylene Outer Casing (wound) - offers mechanical protection and corrosion resistance
Application Scope
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Anti-corrosion & thermal insulation pipelines for heating, cooling, and crude oil transportation
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Medium temperature: ≤ 120°C (peak ≤ 140°C)
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Medium pressure: ≤ 2.5 MPa
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Installation methods: Direct burial (primary), trench laying, or overhead installation
Advantages of Polyurethane Spray Insulation Pipe
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Consistent and controllable polyurethane density
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Void-free rigid polyurethane foam
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High bonding strength: Shear strength (friction) between foam and PE casing > 200 KPa
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Customizable design: Adjustable thickness of insulation layer and PE casing
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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 |
Technical Process
The spray and winding production process ensures:
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Uniform insulation layer density
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Improved product quality
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Optimized production efficiency
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Lower production costs
Production Line Components:
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Steel Pipe Outer Wall Shot Blasting Line
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Prepares steel pipe surface for optimal polyurethane bonding
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Polyurethane Spray Molding Line
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High-pressure spray technology for uniform foam application
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Polyethylene Sheet Extruding & Winding Line
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Continuous extrusion and spiral winding of PE casing
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Water Cooling Line
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Controlled cooling for dimensional stability
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End-Cutting Equipment
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Precision trimming of finished pipes
![PUR Spray Polyethylene Wrapped Pre-Insulated Pipe Line for Heating Cooling Oil Pipeline]()
![PUR Spray Polyethylene Wrapped Pre-Insulated Pipe Line for Heating Cooling Oil Pipeline]()
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Container Delivery
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.