Dimensional specifications, pressure classes and engineered jointing for specialized infrastructure service.
PE Sewage, Corrugated & Drainage Pipes
Three separate products: corrugated, sewer and drainage
This category holds three separate products: 1) Double-Wall Corrugated Pipe (Product P004) with a corrugated exterior and a smooth bore for gravity sewer and storm-water networks; 2) brown-striped Solid-Wall PE Sewer Pipe (Product P005) for butt-fused sewer lines; 3) straight-length Drainage Pipe (Product P006) that collects excess soil water under green spaces. Corrugated pipe is not drainage pipe.
Matching the structural pipe design to the hydraulic regime (free-surface gravity flow versus pressurized discharge) forms the core engineering decision among these three systems.
Technical Comparison: Double-Wall Corrugated vs Solid-Wall Sewer
Double-Wall Corrugated Pipe (P004) is sized by inside diameter (ID 150 to 1200 mm) across standard ring stiffness classes SN4 (4 kN/m²), SN8 (8 kN/m²), and SN16. The corrugated exterior geometry provides high sectional moment of inertia without excess material weight, sustaining heavy traffic loads. Jointing relies on integral sockets or couplers with elastomeric gaskets.
Conversely, Solid-Wall Sewer Pipe (P005) is sized by outside diameter (OD 110 to 1200 mm) per EN 12666 and ISO 4427 in SDR 41, SDR 33, and SDR 26. These solid pipes are joined by butt fusion, forming continuous, monolithic runs essential for industrial effluent lines or applications demanding total seal integrity against root intrusion and exfiltration.
Straight-length drainage pipe for green spaces
Drainage pipe (Product P006) is supplied in straight lengths and, under green spaces, parks and landscaped grounds, collects excess soil water through openings in its wall and carries it to an outlet. Diameter and length are confirmed at quotation; its size table will be published once the supplier's dimensions are in.
Drainage pipe collects water from the soil and does not carry sewage; for a sewer line use double-wall corrugated pipe or solid-wall sewer pipe.
PE Sewage, Corrugated & Drainage Pipes — Frequently Asked Questions
What is the difference between SN4 and SN8 ring stiffness classes?
SN represents nominal ring stiffness in kN/m²; SN4 is suited for standard shallow burial without heavy traffic, whereas SN8 and SN16 are specified for deep trenches and heavy vehicular surface loading.
Why are corrugated pipes designated by internal diameter?
In gravity flow hydraulics, flow discharge capacity is strictly a function of the internal waterway area; hence corrugated sewer pipes are cataloged by inside diameter per EN 13476-3.
Is corrugated pipe used for green-space drainage?
No. Corrugated pipe is not drainage pipe; it carries sewage and storm water by gravity. For drainage under green spaces use straight-length drainage pipe.
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