Typical Application Fields

Application Field	Specific Use Case	Key Requirements
Municipal Sewerage	Municipal Sewerage	Ring stiffness + Corrosion resistance
Industrial Drainage	Chemical wastewater pipes, Acid/alkali discharge pipes	Chemical resistance + Pressure resistance
Building Drainage	Basement drainage, Siphonic rainwater systems	Noise reduction + Settlement resistance
Agricultural Effluent	Livestock farm effluent, Biogas project piping	Impact resistance + Bio-corrosion resistance
Mining Tailings	Tailings slurry lines, Leachate collection pipes	Abrasion resistance + UV resistance

Technological Frontiers

1.  Material Modification Technologies

       Nano-reinforced PE Pipe: Incorporates nano-montmorillonite, improving ring stiffness by 40%.

       Antistatic PE Pipe: Contains 2.5%-3.0% carbon black, achieving surface resistivity <10⁶ Ω.

2.  Structural Innovations

       Double-Wall Corrugated Pipe: Ring stiffness SN8-SN16, 30% lighter weight.

       Spiral Wound Reinforced Pipe: Capable of producing large-diameter pipes up to DN3000.

       Seismic Joint Pipe: Specialized pipe with rubber sealing rings for seismic zones.

3.  Smart Monitoring

       Smart Pipe with Sensors: Integrated fiber optic sensors for real-time deformation monitoring.

       RFID-Tagged Pipe: Each pipe section embedded with an RFID chip for full lifecycle management.

Selection Considerations

1.  Mechanical Performance Matching

       Burial Depth <4m: Select ring stiffness SN8.

       Burial Depth 4-6m: Select ring stiffness SN12.5.

       Burial Depth >6m or Under Roadways: Select ring stiffness SN16.

2.  Chemical Media Considerations

       Standard Domestic Sewage: Standard HDPE pipe.

       Industrial Wastewater: Select specialized grades based on pH and temperature of the medium.

       High-Temperature Drainage (≤60°C): Choose heat-resistant modified PE pipe.

3.  Standards & Certifications

       National Standard: GB/T 19472.1-2019 Polyethylene structured wall piping systems for buried drainage and sewerage.

       Hygiene Requirements: GB/T 17219 Safety evaluation standard for equipment and protective materials in drinking water systems.

       EU Standard: EN 13476-2 Plastics piping systems for non-pressure underground drainage and sewerage.

Basic Performance Parameter Comparison

Performance Indicator	Solid Wall Pipe	Double-Wall Corrugated Pipe	Spiral Wound Reinforced Pipe	Test Standard
Nominal Diameter (mm)	20-1200	200-2600	300-3000	GB/T 4217
Ring Stiffness (kN/m²)	SN4-SN16	SN4-SN16	SN8-SN16	GB/T 9647
Density (g/cm³)	0.941-0.965	0.935-0.955	0.940-0.960	GB/T 1033
Tensile Strength (MPa)	≥20	≥18	≥18	GB/T 1040.2
Elongation at Break (%)	≥350	≥300	≥350	GB/T 1040.2
Longitudinal Reversion (%)	≤3	≤3	≤3	GB/T 6671
Pressure Test	No leakage	No leakage	No leakage	GB/T 6111

Chemical Resistance Table

Chemical Medium	Concentration (%)	Temperature (°C)	Resistance Evaluation
Hydrochloric Acid	≤30	20	Long-term resistant
Sulfuric Acid	≤70	20	Long-term resistant
Sodium Hydroxide	≤40	20	Long-term resistant
Brine	Saturated	20	Long-term resistant
Gasoline	100	20	Short-term resistant
Short-term resistant	100	20	Limited resistance
Domestic Sewage	-	40	Long-term resistant
Industrial Wastewater	pH 2-12	40	Depends on specific composition

Structure Type Selection Table

Pipe Type	Suitable Diameter (mm)	Max. Burial Depth (m)	Main Features	Typical Applications
PE Solid Wall Pipe	20-1200	6	Good pressure-bearing, reliable joints	Good pressure-bearing, reliable joints
Double-Wall Corrugated Pipe	200-1200	8	Lightweight, fast installation	Municipal gravity-flow sewage & stormwater
Spiral Wound Reinforced Pipe	300-3000	10	Large diameter, high ring stiffness	Main sewer lines, River rehabilitation
Steel Reinforced Pipe	Steel Reinforced Pipe	12	Ultra-high ring stiffness, high load-bearing	Deep burial, Heavy-load road sections
Ribbed Pipe (e.g., HDPE)	300-3000	8	Excellent integrity, superior leak-proofing	Critical projects, Sensitive areas

Connection Method Comparison Table

Connection Method	Suitable Diameter (mm)	Advantages	Disadvantages	Typical Applications
Butt Fusion	90-1200	High strength, excellent seal	Requires specialized equipment	Requires specialized equipment
Electrofusion	20-800	Simple operation, consistent quality	Higher cost	Repair works, Confined spaces
Bell & Spigot	200-2600	Rapid installation, accommodates settlement	Rapid installation, accommodates settlement	Municipal drainage networks
Flanged Joint	≥110	Demountable, easy maintenance	Potential leakage risk	Equipment interfaces, Access points
Mechanical Coupling	20-800	No power required, immediate use	Lower long-term reliability	Temporary works, Emergency repairs

With its exceptional corrosion resistance, long service life, flexibility, and ease of installation, PE sewer/drainage pipes have become the material of choice for modern drainage systems. Continuous advancements in materials and joining technologies promise broad application prospects in emerging fields such as smart pipe networks and sponge city development.