Pressure pipe · 2.6 m and above
Large-Diameter Reinforced PE Pressure Pipe
Steel-wire-reinforced, spiral-wound composite construction
Large-Diameter Reinforced PE Pressure Pipe is a steel-wire-reinforced polyethylene pressure pipe made by spiral winding. Shunfang uses this construction for pressure mains of 2.6 m diameter and above. Diameter, pressure class and jointing are confirmed for each project.
- Diameter range
- 2.6 m and above; published table to DN5000
- Nominal pressure (PN)
- 0.4–1.0 MPa at DN2800–DN3600; 0.4–0.8 MPa at DN4000–DN5000
- Reinforcement
- Carbon spring-steel wire, tensile strength about 2000 MPa
Last updated . Reviewed by Shunfang Engineering Team
Technical specifications
| Construction | Steel-wire-reinforced, spiral-wound composite |
|---|---|
| Manufacturing method | Spiral winding with heat bonding |
| Reinforcement | Carbon spring-steel wire, tensile strength about 2000 MPa |
| Diameter range | 2.6 m and above; published table to DN5000Standard wound-line range to DN4000; larger diameters follow a project-specific route |
| Nominal pressure (PN) | 0.4–1.0 MPa at DN2800–DN3600; 0.4–0.8 MPa at DN4000–DN5000Other combinations by project review |
| Standard | T/CWEC 10-2019 |
| Jointing | Double-seal socket, electrofusion band, PE-end butt fusion, electrofusion sleeve, double-seal sleeve |
Construction and manufacturing
- Extrude a PE strip with high-strength steel wire embedded.
- Wind the strip spirally and heat-bond adjacent windings.
- Add an outer PE protective layer.
Industrial interior view of a large reinforced PE pipe 
Prepared PE pipe-end connection diagram
Materials
- Carbon spring-steel wire sits between PE layers; tensile strength about 2000 MPa, elastic modulus about 200 GPa.
- The wire is copper-plated and PE-wrapped to resist delamination.
Sizes and ratings
Scroll sideways to see all columns
| Nominal diameter dnmm | Min. average inside diametermm | PN 0.4 MPamm | PN 0.6 MPamm | PN 0.8 MPamm | PN 1.0 MPamm |
|---|---|---|---|---|---|
| 2800 | 2471 | 30.0 | 32.0 | 34.0 | 36.0 |
| 3200 | 2824 | 32.0 | 34.0 | 36.0 | 40.0 |
| 3600 | 3176 | 34.0 | 36.0 | 40.0 | 43.0 |
| 4000 | 3529 | 38.0 | 42.0 | 46.0 | — |
| 4500 | 3971 | 44.0 | 48.0 | 52.0 | — |
| 5000 | 4412 | 48.0 | 52.0 | 56.0 | — |
— not available in this specification
Applications
- Raw Water TransmissionReservoir and river source lines to the treatment plant
- Municipal Water SupplyUrban trunk mains and regional supply schemes
- Industrial & Cooling Water SupplyProcess and cooling water for plants and industrial parks
Features and benefits
- Spiral winding sets the diameter; sizes are published up to DN5000.
- High-strength steel wire, about 2000 MPa, between PE layers.
- Five jointing routes chosen by diameter.
- On-site production can be assessed above 3 m.
Jointing and installation
Double-seal socket
No power needed; allows small longitudinal movement.
Electrofusion band
For DN1000 and above; banded along the rib groove, clamped and fused.
PE-end butt fusion
Prepared PE joint ends are butt-fused on site.
Electrofusion sleeve
A PE sleeve with embedded heating wire joins the two pipe ends.
Double-seal sleeve
A compressed sleeve with two sealing rings provides dual sealing.
On-site production
For pipe above 3 m in diameter, moving production equipment to the project site can be assessed when transport is the constraint.
Standards and quality
- T/CWEC 10-2019Reinforced PE composite pipe · Product standard
Certified management systems
- ISO 9001:2015
- ISO 14001:2015
- ISO 45001:2018
Project references
| Project | Location | Specification |
|---|---|---|
| Indonesia aquaculture seawater circulation | Indonesia | DN2400 · 1.0 MPa · 2 × 600 m |
Large-diameter reference; this project is below the 2.6 m threshold.
Indonesia aquaculture seawater circulationDN2400 · 1.0 MPa · 2 × 600 m
Photos
Crane vessel lifting a DN2400 pipe section for the Indonesia seawater project 
Indonesia DN2400 marine installation reference 
Reinforced pipe shipment for reservoir water line 
Reinforced PE pipe loading for Fengdu water-supply line
Frequently asked questions
When is a spiral-wound reinforced PE pressure pipe needed?
For pressure pipe of 2.6 m diameter and above.
What pressure classes are available at these diameters?
The published table gives 0.4–1.0 MPa for DN2800–DN3600 and 0.4–0.8 MPa for DN4000–DN5000. Other combinations are confirmed by project review.
How does it differ from Steel Wire Reinforced PE Composite Pipe?
This pipe is formed by spiral winding and is used from 2.6 m upward. Steel Wire Reinforced PE Composite Pipe is extruded and covers diameters up to DN1600.
How are such large pipes joined?
By double-seal socket, electrofusion band, PE-end butt fusion, electrofusion sleeve or double-seal sleeve, chosen by diameter and site conditions.
Can it be produced at the project site?
Yes. For pipe above 3 m, on-site production can be assessed when transport is the constraint.
What information do you need for a project review?
Diameter, design and operating pressure, medium and temperature, line length, connection preference, standard, destination, delivery date, route constraints and site access.
Compare with Steel Wire Reinforced PE Composite Pipe
| Parameter | Large-Diameter Reinforced PE Pressure Pipe | Steel Wire Reinforced PE Composite Pipe |
|---|---|---|
| Construction | Steel-wire-reinforced, spiral-wound composite | PE core / wound steel wire / PE outer jacket |
| Manufacturing method | Spiral winding with heat bonding | Extrusion, wire winding, second extrusion |
| Diameter range | 2.6 m and above; published table to DN5000 | Up to DN1600 (1.6 m, 63 in) |
DN1600 or smaller? See Steel Wire Reinforced PE Composite Pipe.
Send us your project parameters
Tell us the diameter, pressure or ring stiffness, quantity and destination. We reply with the next technical step.
Export contact
Michael, Customer Manager
- +86 13609843896
- Phone
- +86 13609843896