mon-fri 9-13 / 14.30-18.30
Flat road gully grate in ductile iron with automatic locking. External dimensions: 300 x 300 mm. Height: 45 mm.
Concave rainwater gully with anti-theft locking. External dimensions: 300 x 300 mm. Height: 40 mm.
Road gully in ductile iron with automatic closure and concave surface. External dimensions: 400 x 400 mm. Height: 55 mm.
Spheroidal graphite cast iron road gully with anti-theft locking system. External dimensions: 400 x 400 mm. Height: 45 mm.
Rectangular road gully top with C250 load capacity. Dimensions: W.550xD.450xH.60mm
Square street gully, concave surface, in GJS-500-7 ductile iron. Concavity: 15 mm. Dimensions: 500 x 500 mm. Height: 55 mm.
Spheroidal cast iron road gully with a square frame. External dimensions: 500 x 500 mm. Height: 50 mm.
Flat road gully in ductile iron. External dimensions: 400 x 400 mm. Height: 75 mm.
Flat gully grate in ductile iron GJS 500-7 – EN 1563, with non-slip surface. External dimensions: 550x550 mm. Height: 45 mm. Load class C250.
Flat ductile cast iron road gully grate with automatic closure. External dimensions: 450 x 450 mm. Height: 45 mm.
Cast iron road gully. External dimensions: 49 x 49 cm. Height: 8 cm.
Concave rainwater gully grate with automatic closure and anti-theft locking. External dimensions: 500 x 500 mm. Height: 83 mm.
Rectangular road gully grate equipped with anti-theft locking system. Dimensions: W.550xD.450xH75
Ductile iron manhole cover with flat surface, square frame and cover, suitable for loads up to class C250. External dimensions: 600x600 mm. Height: 50 mm.
Road gully with square-shaped frame and grating. External dimensions: 550 x 550 mm. Height: 80 mm.
Concave ductile iron road gully grating with automatic locking. External dimensions: 600 x 600 mm. Height: 60 mm.
Honeycomb gully grate in C250 ductile iron, 600x600 mm. Anti-theft hinged system for efficient management of road rainwater.
Spheroidal graphite cast iron gully with honeycomb grate. Dimensions: W.600xD.600xH.60mm
Spheroidal cast iron road gully. Dimensions: 60 x 60 x h.8 cm. Class: D400. With anti-theft locking system.
Flat road gully in ductile iron. External dimensions: 700 x 700 mm. Height: 50 mm.
Concave rainwater gully with automatic closure and anti-theft locking. Dimensions: 600 x 600 mm.
Spheroidal cast iron gully grate with square cover. Class: C250. External dimensions: 450 x 450 mm.
Ductile iron road gully with anti-slip embossments and concave surface. Dimensions: 600 x 600 mm.
Road gully made of ductile iron with square cover. Class: C250. External dimensions: 500 x 500 mm.
Ductile iron road gully with non-slip relief. Class: KN400. External dimensions: 400 x 500 mm.
Road gully grating with square frame and grating. External dimensions: 600 x 600 mm. Height: 83 mm
Ductile iron gully with a square frame. Class: D400. External dimensions: 500 x 500 mm.
Road gully with square frame and grate. External dimensions: 800 x 800 mm. Height: 65 mm.
Spheroidal graphite cast iron gully with octagonal frame and round cover. Class: D400. External dimensions: Ø 850 mm.
Ductile iron gully grate with square-shaped frame and circular lid. Class: D400. External dimensions: 750 x 750 mm.
Ductile iron gully with circular frame and cover. Class: D400. External dimensions: Ø 850 mm.
Flat gully grate in ductile iron with square base frame. External dimensions: 850 x 850 mm. Height: 100 mm.
Flat road gully in spheroidal cast iron with automatic locking. External dimensions: 800 x 800 mm. Height: 80 mm.
Flat rain gully with automatic closure and anti-theft locking. External dimensions: 900 x 900 mm. Height: 75 mm.
Spheroidal cast iron road gully. Class: D400. External dimensions: 640 x 940 mm.
Flat road gully with anti-theft locking. External dimensions: 900 x 900 mm. Height: 80 mm.
Spheroidal graphite cast iron flat road gully with square base frame. External dimensions: 850 x 850 mm. Class: F900.
Road gullies are essential drainage infrastructures for managing stormwater and surface runoff in urban and peri-urban environments. Mainly made of ductile iron, these elements combine structural strength and high load capacities, ensuring durability over time even under intense vehicle loads. Their role is crucial in preventing flooding, erosion, and damage to the lower layers of the pavement, representing a consolidated technical solution in modern road designs. Gullies are distinguished by geometries, load classes, useful depths, and locking systems, adapting to multiple application contexts: from municipal roads to parking lots, from public squares to industrial areas.
Choosing the correct type depends on specific technical parameters such as the design load, the drainage surface, the depth of the underground chamber, and the required anti-theft protection level. Inadequate design leads to risks of structural failure, hydraulic backflow, and compromise of the road surface integrity, which is why compliance with European standards and the selection of certified products are fundamental.
Road gullies offer multidimensional benefits in the integrated management of urban stormwater. From a hydraulic perspective, they facilitate the rapid interception of surface runoff, reducing the time water stays on the roadway and minimizing aquaplaning phenomena and damage to road gravel. In terms of durability, ductile iron provides exceptional resistance to freeze-thaw cycles, the chemical action of de-icing salts, and repeated dynamic loads, significantly extending the life of the infrastructure compared to alternative materials. From an economic standpoint, they represent a reliable solution that reduces maintenance interventions, limiting long-term management costs.
In the contemporary design context, the integration of gullies with non-slip surfaces and anti-theft locking systems is a concrete response to road safety and theft protection requirements, which are particularly critical in dense urban environments. Standardized geometries also facilitate maintainability and periodic cleaning, non-negligible aspects near high-traffic road axes. Finally, dimensional modularity allows the solution to be adapted to specific hydraulic discharge needs, avoiding oversizing and ensuring correct integration into the overall layout of the rainwater drainage network.
Road gullies are divided into several construction variants, each characterized by functional and dimensional peculiarities. The most common classification distinguishes between flat gullies, with a flat upper surface and a sober profile, ideal for discreet integration into regular pavements; concave gullies, equipped with a central recess (generally 15 mm) that concentrates the water flow towards the discharge outlet, maximizing collection efficiency even in tangential runoff conditions; and honeycomb gullies, provided with a lattice-patterned grating that offers an increased discharge surface and better distribution of point loads. Regarding the frame geometry, there are square configurations (the most common, available in sizes from 300x300 to 800x800 mm), rectangular (suitable for wide-section connection channels), circular, and octagonal (frequent in applications requiring a particular aesthetic transition).
Differentiation continues in terms of locking systems: gullies with a classic hinge allow for easy access for maintenance, while models with automatic closure and anti-theft locking prevent unauthorized removal through articulated or snap mechanisms. The useful height (distance between the frame and the bottom of the chamber) typically varies between 40 and 85 mm, directly influencing the installation depth and compatibility with underground water levels. The load class, expressed according to EN 1433 standards (A15, B125, C250, D400, E600, F900), determines the maximum allowable load: from pedestrian areas (C250, 250 kN) to high heavy-traffic roads (D400, E600, F900). This variety of options allows for covering practically any design scenario, from residential installations to critical infrastructures subject to special vehicle transit.
Selecting the suitable gully requires a preliminary analysis of multiple technical and contextual criteria. The first decision element is the expected load class: it is imperative to consult the road design to verify if the area falls into light traffic zones (residential parking, pedestrian squares with authorized access), medium traffic (local roads with occasional bus transit), or heavy traffic (main axes, port areas, industrial zones with heavy load movement). Undersizing the class exposes the system to the risk of structural failure and hydraulic backflow in case of intense rain; oversizing, on the contrary, leads to an unjustified economic increase. The second criterion concerns the required hydraulic capacity: this is determined based on the relevant catchment area, the design rainfall intensity (generally T=10 years for ordinary urban areas), and the configuration of the underlying network. Insufficient discharge surface will generate puddles; excessive surface will undersize the downstream conveyance elements.
An often underestimated aspect is the depth available on-site: verifying interferences with underground utilities (water pipes, gas lines, cables) is preliminary to choosing the useful height of the gully. In dense urban contexts, the installation of lower gullies (40-50 mm) allows for greater design flexibility. Similarly, the grating geometry affects maintainability: honeycomb surfaces catch leaves and debris more easily than flat ones, thus requiring more frequent cleaning in environments with vegetation. For sites subject to theft risks—common in less monitored areas or rest areas—prefer models with an articulated anti-theft system or snap locking. The choice between a flat and concave surface depends on the context: concave ones are preferable where runoff is mainly tangential (road edges), while flat ones ensure better aesthetic integration and easier walking in areas with high pedestrian traffic. Common errors include ignoring installation tolerances (differential settlements), underestimating the impact of thermal cycles on cast iron (expansion and contraction), and not providing an adequate local slope of the road bed towards the gully.
The design and installation of road gullies are governed by the European standard EN 1433, which defines the classification criteria based on the breaking load, test methods (static, dynamic, fatigue), and construction specifications. The EN 1563 standard regulates the properties of ductile iron (GJS 500-7), ensuring values of resilience, toughness, and oxidation resistance suitable for outdoor use. In Italy, the Guidelines of the Ministry of Public Works and regional regulations also require CE conformity certification and, in some cases, environmental sustainability certification for significant public works. Resistance to de-icing salts and durability in freeze-thaw cycles are implicit requirements verified through accelerated laboratory tests.
From a road safety perspective, gullies must guarantee a non-slip surface suitable for reducing the risk of falls, with a minimum friction coefficient varying depending on whether the installation occurs in a traffic lane, shoulder, or pedestrian transit zone. Hydraulic management must comply with municipal regulations on the collection and conveyance of stormwater, often coordinated with regional decrees on discharges into surface receiving bodies. The load class is mandatory depending on the actual use of the road: false certifications generate civil and criminal liability in case of accidents. Accessibility for people with motor disabilities also requires that the gully does not protrude more than 5 cm from the pavement level, avoiding obstacles to the movement of wheelchairs. Many public entities finally impose extended structural warranty clauses (up to 10 years) and production traceability certifications to ensure the quality of the material and traceability in case of criticalities.
Explore all the products in the category and compare the available solutions to find the one best suited to your operational context. Carefully evaluate the required load class, the dimensions compatible with the design, and the anti-theft security systems based on the installation site.
The flat gully features a flat and uniform upper surface, ideal for aesthetic integration and frequent pedestrian traffic. The concave one has a central recess (15 mm) that channels tangential runoff toward the drain, maximizing collection efficiency even on slightly uneven surfaces. Choose the flat one for mixed-use environments, the concave one for road edges with lateral water flow.
The class is determined by the maximum expected load: C250 (local roads, parking lots), D400 (main axes and heavy traffic), E600/F900 (industrial areas and ports). Consult the road design or contact the relevant administration. Undersizing it exposes the system to structural failure; oversizing increases costs unjustifiably.
Useful heights vary from 40 to 85 mm, with 45-55 mm representing the most common standard. The choice depends on the depth available on-site and interference with underground utilities. Smaller heights (40 mm) allow for greater design flexibility in dense contexts; greater heights (75+ mm) offer higher accumulation volumes for intense flows.
No, it depends on the context. In rural or otherwise uncrowded areas, anti-theft locking is optional. In dense urban environments, public parking lots, and rest areas, articulated or snap protection is recommended to prevent unauthorized removal and subsequent damage to the integrity of the drainage system.
The flat surface ensures aesthetic integration and ease of walking. The concave one concentrates runoff in environments with tangential flow. The honeycomb offers maximum hydraulic capacity but requires frequent cleaning to avoid leaf accumulation. Choose based on road geometry and available maintainability.
With routine maintenance, a ductile iron gully (GJS 500-7) lasts 30-50 years. Resistance to freeze-thaw cycles, the chemical action of de-icing salts, and repeated dynamic loads ensures exceptional durability. Critical factors are correct installation, efficient drainage, and periodic cleaning to avoid corrosive accumulation.
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