Dual Wall Pipe: Engineered Secondary Containment Solution
Application Scenarios
Critical installations requiring fail-safe protection:
- Chemical plants handling corrosive media (ASTM D1784 compliant)
- LNG transfer systems (-162°C cryogenic service)
- Pharmaceutical CIP/SIP processes (3-A Sanitary Standard)
- Underground fuel storage (EPA 40 CFR Part 280)
- Commercial storm sewers
- Tetention/detention systems
- Highway construction
- Culverts
- Grain aeration
- Agricultural pattern-tiling mains & outlets
Engineering Solutions
- Leak-Proof Design: Outer wall rated for 1.5× design pressure of inner pipe (ASME B31.3)
- Monitoring Ready: 1/4″ NPT ports every 3m for sensor integration
- Modular Assembly: Fusion-welded joints with ≤2% ovality tolerance
Advanced Technical Parameters
- Materials:
- Inner: HDPE PE100-RC (EN 12201-1)
- Outer: UV-stabilized PP (ISO 15874)
- Pressure/Temp: PN16 @ 20°C, 10bar @ 80°C (ISO 4065)
- Thermal Performance: 0.22 W/m·K conductivity (ASTM C518)
Application Cases
- Oil Refinery Expansion: 2km DN200 system detected 0.5L/min leak within 15s
- Wastewater Plant: 10-year corrosion-free operation in pH2-12 environment
Common Technical Questions
- Q: Minimum bend radius?
A: 25× pipe OD (per EN 13476-3) - Q: Leak detection sensitivity?
A: 0.1L/min with pressure decay method
Competitive Advantages
- Certified: CRN, PED, and AD2000-W0 approvals
- Digital Twin: RFID-tagged spools with 3D installation guides
- Testing Protocol: 100% hydrostatic test @ 1.5× MAWP
