uPVC Sewer Pipe — SN4
Gravity-flow uPVC sewer and drainage pipe systems engineered for municipal and commercial infrastructure.
uPVC Sewer Pipe — SN4
uPVC Sewer & Drain Pipes
General-purpose SN4 sewer pipe for municipal sewerage and commercial drainage infrastructure. The most widely specified gravity sewer pipe class for standard burial depths and typical road loading.
Applications
- Municipal Sewerage Networks
- Storm Drainage Systems
- Commercial Building Drainage
- Industrial Effluent Disposal
- Road & Highway Drainage
Industries
Engineered Performance
Technical advantages built into every unit in this range.
Chemical & Biological Resistance
PVC formulation resists aggressive sewage chemistry, hydrogen sulphide, and microbial attack — maintaining full structural integrity over a 100-year design life.
Low Friction Coefficient
Manning's n = 0.009 smooth bore dramatically improves flow capacity and self-cleansing velocity versus traditional materials, reducing blockage risk.
Structural Ring Stiffness
SN2, SN4, and SN8 classes provide graduated stiffness options for varying installation depths and traffic loading conditions.
Rubber Ring Socket Joints
Factory-formed integral socket with EPDM rubber ring seal — provides watertight performance at ±2° angular deflection for ground movement accommodation.
Light Weight, Easy Handling
1/5th the weight of concrete pipes enables manual handling and faster installation without heavy lifting equipment, reducing labour costs significantly.
Full Test Certification
Every production batch undergoes ring stiffness, impact resistance, and hydraulic pressure testing with full traceability documentation for project compliance.
Specifications
| Standard | BS EN 1401 / ISO 4435 |
| Application | Sewerage |
| DN Range | 100–500mm |
| Stiffness | SN4 |
| Joint | Rubber Ring |
| Length | 6m |
Compliance
Plastics Piping Systems for Underground Drainage
European standard for unplasticized PVC gravity sewer pipes — defines geometry, mechanical performance, and joint watertightness requirements.
PVC-U Pipes for Gravity Sewers
International standard for unplasticized PVC pipes for buried gravity sewerage systems, covering classification and test methods.
Dimensional Range
| DN (mm) | OD (mm) | Wall SN4 (mm) | Wall SN8 (mm) | Length (m) |
|---|---|---|---|---|
| 100 | 110 | 3.2 | 4.2 | 6 |
| 150 | 160 | 4.0 | 5.3 | 6 |
| 200 | 200 | 4.9 | 6.6 | 6 |
| 250 | 250 | 6.2 | 8.2 | 6 |
| 300 | 315 | 7.7 | 10.3 | 6 |
| 400 | 400 | 9.8 | — | 6 |
| 500 | 500 | 12.3 | — | 6 |
| 630 | 630 | 15.4 | — | 6 |
* All dimensions in mm unless stated. Custom sizes available on request.
Technical Documentation
Sewer Pipe Datasheet
PDFTechnical specifications, hydraulic data, and installation requirements for the full sewer pipe range.
1.8 MB
Bedding & Backfilling Guide
PDFEngineering guidance on pipe bedding classes, compaction requirements, and backfill zone specifications.
3.2 MB
From the Same Range
uPVC Sewer & Drain Pipes
uPVC Sewer Pipe — SN8
BS EN 1401 / ISO 4435
100–315mm
DN Range
SN8
Stiffness
Rubber Ring
Joint
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