High Pressure PE Drainage Pipe 75mm 110mm Polyethylene Sewer Pipe

Polyethylene (PE) drainage and sewage pipes are manufactured from high-grade polyethylene raw materials through advanced single-stage extrusion technology. Purpose-designed for gravity and pressure drainage applications, these pipes are extensively deployed in municipal stormwater networks, sanitary sewage collection systems, industrial effluent conveyance, siphon drainage projects, and combined sewer overflow management infrastructure.

PE drainage pipelines employ thermal butt-fusion and electrofusion joining methods that create fully integrated, leak-proof joints capable of withstanding groundwater infiltration pressure from outside and sewage exfiltration pressure from within. This monolithic connection system eliminates the joint leakage that plagues traditional concrete and clay drainage pipes, preventing environmental contamination of surrounding soil and groundwater. Additionally, PE drainage pipes contain no heavy metal stabilizers, ensuring that even in the event of accidental discharge, no toxic compounds leach into the receiving environment.

• Municipal stormwater drainage trunk mains and laterals
• Sanitary sewage collection and conveyance networks
• Industrial effluent and process wastewater discharge
• Siphon rainwater and roof drainage systems
• Combined sewer overflow (CSO) and interceptors
• Highway and roadway subsurface drainage
• Trenchless sewer rehabilitation and pipe bursting
• Landfill leachate collection and management
• Agricultural field drainage and water table control
• Seawater outfall and coastal discharge pipelines
• Underground utility tunnel drainage networks

Exceptional Chemical & Biological Resistance: PE drainage pipes provide permanent immunity to the hydrogen sulfide (H₂S) corrosion, sulfuric acid attack, and microbiologically induced degradation that progressively destroy concrete and metal sewage pipes. The dense, non-porous inner surface prevents biofilm adhesion, slime accumulation, and the root intrusion problems common in jointed drainage systems.

Superior Hydraulic Efficiency: The ultra-smooth internal surface with a Manning roughness coefficient as low as 0.009 enables superior flow conveyance compared with concrete (n=0.013), clay (n=0.012), and corrugated metal pipes. This hydraulic advantage allows smaller diameter PE pipes to achieve equivalent drainage capacity, reducing excavation width, bedding material, and total installed cost in congested urban environments.

Ground Movement Resilience: The inherent flexibility and ductility of PE pipe material enables the drainage network to accommodate differential ground settlement, seismic movement, and heavy traffic loading without the brittle cracking and joint separation failures characteristic of rigid concrete and vitrified clay drainage systems. This resilience is particularly valuable in soft soil, reclaimed land, and earthquake-prone regions.

Leak-Free Joint Integrity: Thermal fusion welding produces homogeneous butt joints and electrofusion couplers with strength exceeding the pipe body. This eliminates the 10-25% infiltration and exfiltration losses typical of rubber-gasketed and mortar-jointed drainage pipes, ensuring full design hydraulic capacity and preventing soil erosion around buried drainage infrastructure.