Corrugated Elbow & Tee
Corrugated 90° and 45° elbows and tees for changing direction and branching in sewer and drainage networks built with double-wall corrugated pipe; inside diameter 150 to 800 mm, mostly made to order.
- 90° elbows, 45° elbows and tees
- For double-wall corrugated sewer pipe
- Inside diameter 150 to 800 mm
- Mostly made to order (welded)
- Used in sewage and drainage
Key Specifications
- Product code
- P061
- Material & grade
- PE
- Inside diameter
- 150–800 mm
- Unit of sale
- Piece
- Applications
- Sewage, Drainage & stormwater
- Dimensional options
- 24 rows in the specification table
What corrugated elbows and tees are for
In sewer and drainage networks built with double-wall corrugated pipe, the route is not always straight. A corrugated elbow turns the line through 90 or 45 degrees and a corrugated tee takes a branch from the main. These fittings are made with the same inside diameter as the corrugated pipe so gravity flow is not reduced at the joint.
A 45° elbow gives a gentler turn and is often preferred on gravity networks because less sediment builds up at the bend. Our catalogue describes these fittings as mostly made to order (welded), that is, prepared to the diameter and angle of the project.
Corrugated elbow and tee sizes
Our rows cover 90° elbows, 45° elbows and tees in inside diameters of 150, 200, 250, 300, 400, 500, 600 and 800 mm, the same inside diameters as the published double-wall corrugated pipe in this range. Corrugated pipe is sized by its inside diameter, not the outside.
In your order give the inside diameter, part type, angle, the stiffness class of the connecting pipe and, for a tee, the branch diameter. Add corrugated couplers and sealing rings for each joint to the same list.
Installing corrugated elbows and tees in the trench
Corrugated elbows and tees sit on a stone-free sand bed like the pipe itself. The joint must be level and unbroken so the network keeps its gravity fall. The sealing ring is seated in the second or third corrugation and the pipe is pushed fully into the coupler or socket of the fitting.
At elbows, especially on large diameters, backfill around the fitting in careful layers so it does not shift. The exact position of elbows and tees, and whether a manhole is needed there, is set by the network designer.
Corrugated Elbow & Tee — Technical Specifications
Wall thickness and weight are calculated from the standard series and are approximate; final values are confirmed in the quotation.
| Inner Diameter (mm) | Type | Angle (°) |
|---|---|---|
| 150 | Elbow | 90 |
| 150 | Elbow | 45 |
| 150 | Tee | — |
| 200 | Elbow | 90 |
| 200 | Elbow | 45 |
| 200 | Tee | — |
| 250 | Elbow | 90 |
| 250 | Elbow | 45 |
| 250 | Tee | — |
| 300 | Elbow | 90 |
| 300 | Elbow | 45 |
| 300 | Tee | — |
| 400 | Elbow | 90 |
| 400 | Elbow | 45 |
| 400 | Tee | — |
| 500 | Elbow | 90 |
| 500 | Elbow | 45 |
| 500 | Tee | — |
| 600 | Elbow | 90 |
| 600 | Elbow | 45 |
| 600 | Tee | — |
| 800 | Elbow | 90 |
| 800 | Elbow | 45 |
| 800 | Tee | — |
Corrugated Elbow & Tee — FAQ
Is a 45° or 90° corrugated elbow better?
On gravity networks a 45° elbow, or two 45° elbows instead of one 90°, is usually preferred; the designer makes the final choice.
How is the size given?
By inside diameter in millimetres, like the corrugated pipe itself.
Which sizes are supplied?
Inside diameter 150 to 800 mm, mostly made to order.
How is the elbow joined to the pipe?
With a corrugated coupler and a matching sealing ring.
