Exterior Drainage / Ductile Iron
Ductile Iron
The same polymer concrete channel body fitted with a ductile cast iron grating in place of stainless steel - built for the heaviest-duty exterior runs where impact resistance and load rating matter more than sightline.
Product certification is in progress and CE is not claimed. Brochure language should be read with the website compliance page.
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Polymer concrete
EN 1433 · A15–E600 · 150×150 mm
Ductile Iron
Ductile cast iron grate
Representative model · not to scale
Construction
Inside the channel
FIG. 01 CHANNEL CROSS-SECTION
WTI · NOT TO SCALE
A polymer concrete body in 1000mm sections, fitted with a matched grating. The body carries the load; the grate is the inlet. Published sizes run 55×100, 100×100, 150×150, 200×200 and 300×300mm, load class A15 through E600.
Load class
EN 1433 classifies channels from A15 to F900. WTI's exterior polymer concrete range is published A15, B125, C250, D400 and E600.
Selected class
C250
250 kN · Heavier vehicular
Kerbside and road-edge runs, basement ramps and service yards carrying heavier commercial traffic.
Specification
| Material | Polymer Concrete |
|---|---|
| Standard | EN 1433 |
| Length | 1000mm |
| Size options | 55×100, 100×100, 150×150, 200×200, 300×300mm |
| Load class | A15, B125, C250, D400, E600 |
| Water absorption | Negligible |
| Grating material | Stainless Steel or Ductile Cast Iron |
How to specify
Ductile cast iron grate
The same polymer concrete channel body fitted with a ductile cast iron grating in place of stainless steel - built for the heaviest-duty exterior runs where impact resistance and load rating matter more than sightline.
EN 1433
Manufactured to comply with EN 1433 - Linear Drainage Channels. Third-party certification is in progress.
Polymer Concrete
Polymer Concrete - produced in-house at the Jaipur plant.
• The range
Compared to its siblings
Against the stainless slot variants (Single, Double, Trianglo), Ductile Iron is the load-class-first choice - it prioritizes durability under vehicular and heavy foot traffic over the narrower sightline the stainless grates offer.
Ductile Iron
Vs
SS Single Slot
Ductile cast iron grate
Stainless single-slot grate
| Ductile Iron | Attribute | SS Single Slot |
|---|---|---|
| Ductile cast iron | Grate | Stainless, single slot |
| Open cast pattern | Inlet | One continuous slot |
| Robust, not discreet | Sightline | Narrowest in the range |
| Vehicular and heavy foot traffic | Duty | Discreet pedestrian / driveway |
| Polymer concrete, 1000mm | Channel | Polymer concrete, 1000mm |
| A15–E600 | Load class | A15–E600 |
| EN 1433 | Standard | EN 1433 |
| Kerbside and wheel loading | Specify when | Hairline driveway and plaza lines |