SIGMA corrugated drainage pipe is a dual-wall (Type S) HDPE corrugated pipe with a corrugated exterior and a smooth interior bore, manufactured to AASHTO M294 and the comparable land-drainage standard ASTM F2648. Supplied solid for storm sewers and culvert pipe, or perforated for subsurface (French) drains and land drainage, this double wall corrugated pipe combines high pipe stiffness with a low-friction flow path in diameters from 4" to 60".
SIGMA corrugated drainage pipe is a double wall corrugated pipe: the corrugated outer wall gives high pipe stiffness for buried loads, while the smooth interior wall keeps a clean, low-friction flow path. Manufactured to AASHTO M294 (and ASTM F2648 for land drainage), this HDPE corrugated pipe is the workhorse for storm sewers and culvert pipe, replacing heavier corrugated metal pipe and corrugated steel pipe culvert with a lighter, corrosion-free HDPE culvert pipe.
Order the pipe solid for culverts and storm sewers, or perforated for subsurface drainage. As a perforated pipe it lets groundwater enter through the holes, so it is ideal for a corrugated French drain pipe, field drain or subsoil drainage system. Class 1 and Class 2 perforations are available per AASHTO M294. Sizes from 4 inch corrugated drain pipe up to large 24"–60" diameters cover yard drainage through highway culverts.
Diameters run from 4" (100 mm) to 60" (1500 mm) in standard 20 ft lengths; small diameters also ship in 50 m or 100 m coils for fast field installation. Joints are plain-end or an integral bell-and-spigot watertight system to ASTM D3212. For a rigid alternative on retaining-wall and land-drainage projects see our rigid permeable drain pipe, or pair the pipe with a geonet drainage layer behind the wall.
SIGMA corrugated polyethylene pipe is made from high-density polyethylene with a minimum cell classification of 435400C per ASTM D3350 and 2%–4% carbon black for UV stability. The annular corrugations and dual-wall profile are produced to AASHTO M294, with ASTM F2648 covering land-drainage use; pipe stiffness is verified at 5% deflection per ASTM D2412. A single-wall Type C profile is also available. Black and corrosion-free, this corrugated polyethylene drainage pipe is engineered for long buried service life.
Traditional culverts use corrugated metal pipe or corrugated steel pipe, which rust and abrade over time and are heavy to handle. An HDPE culvert pipe is lighter, corrosion-free and chemically resistant, and the smooth interior of the double-wall profile gives a better flow path than a single-wall corrugated drain or a galvanized steel culvert pipe. That is why the dual-wall (N-12 / SN8-class) corrugated HDPE pipe is increasingly specified in place of corrugated metal pipe culvert and corrugated steel pipe culvert for storm sewers, driveway culverts and yard drainage.
As a culvert pipe and storm-sewer pipe the solid-wall product carries stormwater under driveways, roads and farm tracks; as a perforated corrugated drain pipe it serves French drains, field drains and subsoil drainage, and retaining-wall and foundation back drainage. Common buyer sizes include 4 inch and 6 inch corrugated drain pipe for yard and downspout drainage up to 24"–60" diameters for highway culverts. For behind-wall flow the perforated pipe pairs with a geonet or geocomposite collection layer.
Corrugated HDPE drainage pipe — Type S dual-wall dimensions & pipe stiffness, per AASHTO M294. Min. stiffness at 5% deflection (ASTM D2412); minimum average production values.
| Nominal ID (in) | Nominal ID (mm) | Outside Dia. (in) | Min. Pipe Stiffness (psi) | Min. Wall Thickness (in) | Standard Length (ft) |
|---|---|---|---|---|---|
| 4 | 100 | 4.7 | 34.0 | 0.002 | 20 |
| 6 | 150 | 6.9 | 34.0 | 0.002 | 20 |
| 8 | 200 | 9.4 | 50.0 | 0.025 | 20 |
| 10 | 250 | 11.8 | 50.0 | 0.025 | 20 |
| 12 | 300 | 14.5 | 50.0 | 0.035 | 20 |
| 15 | 375 | 17.5 | 42.0 | 0.040 | 20 |
| 18 | 450 | 21.5 | 40.0 | 0.050 | 20 |
| 24 | 600 | 27.9 | 34.0 | 0.060 | 20 |
| 30 | 750 | 35.7 | 29.0 | 0.060 | 20 |
| 36 | 900 | 42.1 | 22.5 | 0.070 | 20 |
| 42 | 1050 | 48.2 | 21.0 | 0.070 | 20 |
| 48 | 1200 | 54.3 | 20.0 | 0.070 | 20 |
| 60 | 1500 | — | — | — | 20 |
Solid corrugated drainage pipe is used to carry water as a culvert or storm sewer; perforated pipe has holes along the wall so groundwater can enter, making it the right choice for a French drain, field drain or subsoil drainage system. We supply both, with Class 1 or Class 2 perforations per AASHTO M294 — tell us the application and we will recommend solid or perforated.
Type S is a dual-wall profile with a corrugated exterior for buried-load stiffness and a smooth interior bore for high flow capacity. SIGMA Type S corrugated drainage pipe is made to AASHTO M294; a single-wall Type C is also available. The smooth interior gives much better hydraulics than a single-wall corrugated drain.
Diameters run from 4 inch (100 mm) to 60 inch (1500 mm). Standard length is 20 ft; small diameters also ship in 50 m or 100 m coils for fast installation. Diameters above 48" are available on request, with stiffness and wall values confirmed per production run.
HDPE corrugated pipe is lighter, corrosion-free and easier to handle than corrugated steel or galvanized culvert pipe, and the smooth interior gives a better flow path. It is widely specified as an HDPE culvert pipe and storm-sewer pipe where long service life in wet or aggressive soils matters.
Our dual-wall corrugated pipe is manufactured to AASHTO M294 (Type S), with ASTM F2648 covering land-drainage use. The HDPE compound meets a minimum cell classification of 435400C per ASTM D3350, pipe stiffness is verified at 5% deflection per ASTM D2412, and watertight joints conform to ASTM D3212. A single-wall Type C is also available.
Sections are joined plain-end with an external coupler, or with an integral bell-and-spigot watertight system to ASTM D3212. Tell us whether you need a soil-tight or watertight joint for your storm-sewer or subsurface drainage run and we will supply the matching couplings and fittings.
Yes. Small diameters ship in 50 m or 100 m coils that nest tightly into a container; larger diameters ship as 20 ft cut lengths. Because corrugated HDPE pipe is light for its bore, sea-freight cost per metre is low compared with metal pipe — we confirm coil/length packing and container counts before shipping.
Tell us quantity, destination port, and any questions — we reply within one business day.
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