D400 Gully Grating

Material: Ductile Iron

Coating: Bitumen coating

Load Capacity：40 Tonne Safe Test Load

Frame size: 300*1000*60 

Clear opening: 250*1000 mm

Weight: 39kgs

I. Core Advantages: Dual Protection of Drainage and Safety in Heavy-Duty Scenarios

As a "backbone" in load-bearing classes, the D400 gully grating is designed to fully balance high-strength load-bearing and efficient drainage needs, with significant core advantages:

Superior Load-Bearing Capacity: Strictly compliant with the D400 class requirements in the EN 124 standard, it can withstand wheel pressure up to 400kN. It is suitable for areas with frequent heavy vehicle traffic, such as main roads, highways, freight stations, and industrial zones, eliminating the risk of deformation or fracture caused by rolling.

Efficient Drainage Performance: Adopting an optimized grid design with an opening rate of 30%-40% ensures rapid inflow of rainwater into the drainage system during heavy rain, reducing the impact of the road on traffic. Meanwhile, the grid spacing is precisely calculated to block debris from entering the pipeline and causing blockages, while avoiding entrapment of pedestrians' soles or vehicle wheels.

Safe and Stable Structure: It adopts an embedded connection with the gully frame, combined with anti-slip tooth patterns. After installation, there is no loosening or bouncing, effectively reducing noise when vehicles roll over it. The edges are rounded to reduce the risk of pedestrians tripping, taking into account both road traffic safety and comfort.

II. Performance Parameters and Application Scenarios

Our D400 gully gratings strictly comply with international and domestic standards, fully meeting the needs of heavy-duty scenarios:

Specifications and Sizes: Common dimensions include 500mm x 300mm, 600mm x 400mm, and 700mm x 500mm. Sizes can be customized based on the diameter of drainage pipes and road design requirements. The thickness of the grating is typically designed for load-bearing needs, usually between 30mm and 50mm, ensuring structural strength.

Material Options:

Ductile Iron: This is the primary material used, known for its high strength, excellent toughness, wear resistance, and corrosion resistance. After undergoing hot-dip galvanizing or asphalt coating, it can last over 30 years, making it ideal for heavy-duty applications.

Composite Material: This type uses glass fiber reinforcement combined with a high-strength resin matrix. It is 30% lighter than cast iron and offers exceptional corrosion resistance, making it suitable for humid or mildly corrosive environments, such as auxiliary roads in chemical industrial parks. However, caution should be taken to avoid long-term exposure to extreme heavy impacts.

Structural Forms:

Single Grating Type: This design is suitable for narrow roads or the edges of sidewalks and offers flexible installation options.

Double Grating/Multi-Grating Type: When used in combination, these types provide a larger drainage area and are suitable for central dividers on main roads or areas prone to heavy rainfall.

Additional Functions: Options are available for customizable anti-theft locks to prevent theft and disassembly. Hinge connections can be included for easy opening and maintenance, while reflective signs can enhance visibility at night, catering to the safety management requirements of specific scenarios.

The D400 gully grating is not only the "throat" of the drainage system but also the "guardian" of heavy-duty road safety. We always adhere to the concept of "no compromise on heavy loads, more efficient drainage" to provide solid support for the stable operation of urban infrastructure.