01
Design
Working from your drawings or ours, we detail the casting — clear opening, frame depth, seating, badging and load class — and issue approval drawings before anything is tooled.
BS EN 124 Ductile iron · A15 to F900
Manhole covers and engineering castings for the GCC.
Royal Trading supplies ductile iron access covers, drainage gratings and purpose-made castings to contractors, consultants and utilities — designed to your drawings, cast to specification and delivered to site.
- Product families
- 11
- Catalogued references
- 192
- Load classes
- A15–F900
- Standards
- BS EN 124
What we do
Design. Source. Supply.
Most casting problems on site start on the drawing. We work the detail up front — clear opening, seating, seal type, load class — so what arrives fits the chamber that was actually built.
02
Source
We place work with foundries qualified to cast in ductile iron, grey iron and specialist alloys, from half a kilogram up to a tonne, with pattern making handled in house.
03
Supply
Consolidated delivery to site across the GCC, with material certificates, load test reports and installation support against each consignment.
The range
11 families, 192 catalogued references
Every family below carries a full dimensional schedule — clear opening, over base, frame depth, seal type and load class. Pick a family to see the tables.
Schematic
Square and circular sealed access covers
Solid Top Covers
Ductile iron solid top covers and frames for sewer, storm water and utility chambers. Available single or double seal, …
B125
C250
D400
Specs
Schematic
Two-piece covers for large clear openings
Double Triangular & Semi Circular
Two-piece triangular and semi-circular covers give a large clear opening while keeping each leaf within safe manual han…
D400
Specs
Gullies, channels, catch basins and surface boxes
Drainage Gratings
A full surface-water range: top entry and side entry gullies, continuous channel gratings and bearer bars, catch basin …
C250
D400
Specs
Multi-leaf cable chamber covers and frames
Telecom Covers
Long-span cable chamber covers built from two, four or six leaves in a single frame. Available solid top or recessed fo…
D400
Specs
Filled covers that disappear into the finished surface
Recessed Covers
Recessed covers are filled on site with the surrounding paving, screed or asphalt so the chamber reads as part of the f…
B125
D400
Specs
Round covers and frames including 860 mm heavy duty
Circular Covers
Round covers seat evenly under load and cannot fall into the shaft. The range runs from Ø750 access covers up to an Ø86…
B125
C250
D400
Specs
Bolted watertight boxes and multi-leaf spans
Pull Box & Multipart Covers
Bolt-down pull box covers with a neoprene seal for watertight cable and utility chambers, plus multi-part solid top cov…
B125
C250
D400
F900
Specs
Schematic
Hinged access that opens to 100° and stays put
Hinge Covers & Gratings
Stainless steel hinge pin assemblies let a single operator open the cover safely and leave it standing at 100°, with a …
B125
D400
Specs
Continuous slide-out runs for pumping stations
Trench Covers
Continuous recessed trench cover systems for pumping stations and service ducts. Covers slide out along the run rather …
D400
F900
Specs
Ductile iron core, stainless steel clad edge
Steel Cladding Recessed Covers
Recessed covers with a stainless steel clad frame and cover edge for architectural interiors, lobbies and wet areas whe…
D400
Specs
Multispan pumping station covers filled on site
Concrete Infill Covers
Slide-out pumping station covers filled with C45 concrete on site so the finished surface reads continuous. Frames are …
D400
F900
Specs
In the field
Installed, and carrying traffic
Covers, gratings and trench systems of the types we supply, in service across roads, ports and utility networks.
BS EN 124
Specify by where it sits, not by what it weighs
The load class follows the installed location. Get that right and the rest of the specification falls into place.
A15
15 kN · Group 1
Pedestrian and pedal cyclist areas
Areas that can only be used by pedestrians and pedal cyclists.
B125
125 kN · Group 2
Footways, car parks, light vehicles
Suitable for car parks, footways and areas accessible to normal light vehicle traffic.
C250
250 kN · Group 3
Kerbside channels
For kerbside channel areas of roads, extending up to 500 mm into the carriageway.
D400
400 kN · Group 4
Carriageways and hard shoulders
Suitable for hard shoulders, roads carrying heavy traffic, pedestrian areas and all types of road vehicle.
E600
600 kN · Group 5
Docks and aircraft pavements
For areas of fast moving and especially heavy traffic, such as docks and aircraft pavements.
F900
900 kN · Group 6
Very high wheel loads
For areas involving particularly high wheel loads, such as aircraft pavements.
Where it goes
Built for infrastructure
Airports
Apron, taxiway and landside castings to E600 and F900.
Ports & terminals
Heavy duty covers for container yards and quay services.
Sewerage networks
Sealed and double-seal covers for gravity and pressure mains.
Storm water
Gullies, channel gratings, catch basins and curb inlets.
Roads & highways
D400 carriageway covers, surface boxes and kerb drainage.
Telecom & power
Multi-leaf cable chamber covers and pull boxes.
Rail networks
Trackside service ducts and trench cover runs.
Pumping stations
Slide-out multispan concrete infill cover systems.
Enquiries
Tell us what the chamber needs
Product codes, clear openings, or just the load class and where it sits. We come back with a priced offer and a lead time — usually within one working day.
- Clear opening and over-base dimensions, or the product code
- Load class, or where the cover sits in the finished surface
- Seal type — single, double, or GRP sealing plate
- Badging, lettering and paint requirements
- Quantities, project name and delivery location
Next step
Send us the schedule.
Drawings, a bill of quantities, or just the chamber sizes and load class — we will come back with a priced offer and a lead time.