Cast Iron Gully Gratings

Cast iron gully gratings collect surface runoff and direct it into a stormwater drainage chamber. The open grate intercepts large debris, while the supporting frame secures the assembly within the pavement or kerbside channel. These products are used on roads, car parks, industrial sites and landscaped areas. Correct selection is essential for traffic safety, hydraulic performance and compatibility with the chamber opening.

Main types of cast iron gully gratings

Cast iron gully tops are available in rectangular and round configurations. Rectangular units are commonly positioned along kerbs and defined runoff lines. Round assemblies are selected when the drainage chamber has a matching circular opening.

Products are also classified by their intended installation area and load class. B125 units are suitable for car parks and comparable areas, while C250 gully gratings are intended primarily for kerbside channels exposed to wheel loads. D400 assemblies are used in carriageways, hard shoulders and parking areas accessible to all types of road vehicles. Local specifications may use the DB, DM and DS designations, so the marking must always be checked against the manufacturer’s documentation.

Materials and design options

A typical assembly consists of a cast iron grate and supporting frame. Depending on the product series, grey cast iron or ductile iron may be used. The exact material, weight and dimensional data must be confirmed in the technical datasheet for the specified model.

Available safety features may include hinges, retaining elements or locking systems. A lockable cast iron gully grating helps prevent grate displacement and unauthorised removal in public or traffic areas. The locking method and maintenance access should be evaluated during product selection.

Applications of cast iron gully gratings

Cast iron storm drain inlets are installed along streets and kerbs, beside pavements, in car parks, industrial yards and private developments. They form the water intake point of the stormwater network. The number and position of inlets should be determined by the drainage design, site levels, catchment area and calculated runoff.

How to select a cast iron gully grating

Begin with the installation zone and the required load class under EN 124 or the standard specified by the project engineer. Check the overall and seating dimensions, clear opening, frame depth, slot orientation, water intake area and compatibility with the drainage chamber. A nominal 800×400 mm format does not guarantee interchangeability because the bearing profile and installation dimensions can differ.

For trafficked locations, verify the grate retention system, frame support and installation requirements. Exact specifications depend on the manufacturer, product size and design and must be confirmed using the relevant datasheet. DN and PN are not primary selection parameters for this product category.

Why order from Pipeline Systems of Ukraine

Pipeline Systems of Ukraine supplies components for drainage and other engineering networks for retail and wholesale projects, with delivery available across Ukraine. Buyers can submit the required load class, chamber drawing, installation dimensions and quantity for technical review. A sales specialist can confirm current availability, price, manufacturer details and whether supporting documentation is available for the selected item.

Popular sizes

Common designations and formats subject to availability confirmation:

• DB (B125) — large gully inlet;
• DM (C250) — kerbside or main-road configuration;
• DS (D400) — heavy-duty road configuration;
• rectangular 800×400 mm format;
• round assemblies — diameter selected from the chamber drawing.

CTA

Send your specification to check the price and availability of a cast iron gully grating. The team can verify the load class, seating dimensions and delivery options for your project in Ukraine.

FAQ

1. What is the difference between a gully grating and a manhole cover?

A gully grating has open slots designed to collect surface water. A manhole cover primarily closes an access opening and is not normally intended to provide the same runoff intake capacity.

2. Should C250 or D400 be specified for a road project?

C250 is generally used in kerbside channels within the installation limits defined by the applicable standard. D400 is normally required for carriageways and parking areas used by all types of road vehicles. The project specification remains the final selection basis.

3. Can an existing grate be replaced without changing the frame?

Only if the replacement has matching seating dimensions, bearing surfaces, frame depth and retention details. Comparing technical drawings is more reliable than selecting by nominal dimensions alone.

4. When is a locking gully grating recommended?

A lock or retaining system is useful in public, industrial and trafficked areas where vibration, displacement or unauthorised removal is a concern. The design must still provide safe access for cleaning and inspection.

5. What information is required for a quotation?

Provide the load class, shape, overall and seating dimensions, clear opening, locking requirement, quantity and delivery location. A chamber drawing or the marking from the existing assembly will improve selection accuracy.