Internal Epoxy External 3PE Anti-Corrosion Steel Pipe
Next-Generation Preferred Solution for Long-Distance Water Transmission Projects
Hygienic Safety
Food-grade epoxy coating on inner wall, meets GB/T 17219 standard, ensuring water transmission cleanliness.
Superior Anti-Corrosion Life
External 3PE structure resists multiple corrosions, design life up to 50+ years.
Hydraulic Performance Optimization
Inner wall friction coefficient only 0.008, flow rate increased by 15%.
Key Parameters & Application Scenarios
| Parameter Category | Technical Specifications | Typical Application Areas |
|---|---|---|
| Diameter Range | DN50-DN2000 (Custom Available) | Municipal Water Supply Mains / Water Transmission Tunnels |
| Connection Method | Welding/Flanged/Grooved (DN≥300 Socket Welding Recommended) | Long-Distance Buried Pipeline Networks |
| Working Pressure | 1.0-2.5MPa (Max Pressure 5.0MPa) | Water Conservancy Hubs / Industrial Water Supply |
| Implementation Standards | GB/T 23257, DIN 30670 | Petrochemicals / Island Freshwater Transmission |
Process Innovation & Industry Trends
Dual-Layer Synergistic Anti-Corrosion Mechanism
Inner epoxy layer forms dense ceramic glaze film, outer 3PE layer achieves molecular-level bonding, cathodic disbonding resistance improved by 300%.
Smart Manufacturing Upgrade
Fully automated synchronous molding process, wall thickness tolerance ≤0.2mm, stable and reliable quality.
Market Positioning & Competitive Analysis
| Comparison Item | Our Product | Ordinary Galvanized Steel Pipe |
|---|---|---|
| Service Life | >50 years | 10-15 years |
| Comprehensive Cost | 42% reduction in lifecycle cost | High frequent replacement cost |
| Environmental Impact | 0 heavy metal leaching | Zinc pollution risk |
Production Assurance & Service System
Raw Material Traceability
Yanshan Petrochemical PE + Swiss Axalta Epoxy Resin
Testing System
48-hour Salt Spray Test + Third-party Health Certification
Emergency Response
72-hour Nationwide Delivery (DN≤800)