Products Description
Our ductile iron linear trench grates are integrally cast from high-toughness ductile iron, perfectly matched with prefabricated linear drainage channels. Featuring excellent compression resistance, impact resistance and anti-corrosion performance, they come with full load-bearing grades. Widely applied in municipal roads, parking lots, residential communities, airports, industrial parks and pedestrian streets. With uniform anti-slip slits, they deliver high drainage efficiency, crack resistance and anti-theft performance, making them the ideal heavy-load drainage cover for pavement projects.
Core Advantages
Premium Material: Made of QT500-7 ductile iron, far tougher than gray cast iron, resistant to cracking under heavy rolling loads.
Multi Load Classes: B125/C250/D400/E600/F900 load ratings available, covering pedestrian zones to special heavy-duty roadways.
High Drainage Capacity: Elongated linear slits rapidly discharge rainwater to avoid water accumulation.
Anti-slip & Low Noise: Precision cast anti-slip texture prevents slips for vehicles and pedestrians while reducing driving noise.
Anti-corrosion Surface: Asphalt coating resists rust, rainwater, acid alkali and snow melting agents.
Anti-theft Structure: Optional lock fittings to effectively prevent grate loss.
Custom Sizes: Customizable dimensions to fit all concrete & resin linear drainage channels.
Application Scenarios
Municipal arterial roads, urban pedestrian streets, underground parking lots, logistics parks, airport terminals, highway service areas, gas stations, parks, factory roads and commercial plazas.
Technical Parameters
| Material | QT500-7 Ductile Iron |
| Load Class | B125, C250, D400, E600, F900 |
| Surface Treatment | Bitumen Coating / Black Epoxy Coating |
| Compliance | EN124 European Drainage Standard |
| Customization | Width, Length, Lock Structure, Slit Style Customized |
| Matching Product | Resin Linear Drainage Channel, Concrete Linear Trench |
Application Scenarios
Heavy Duty Ductile Iron Linear Drain Grates for Municipal Drainage
High Load & Anti-theft Ductile Iron Linear Trench Cover
Anti-corrosion Impact-resistant Linear Channel Grate for Roadways
Certificate
CE marking is a mandatory safety certification for all commodities marketed within the EU. This marking serves as proof that your products meet the EU's health, safety and environmental protection regulations, granting legal clearance to distribute goods freely throughout all EU member countries.
ISO certifications are issued by the International Organization for Standardization and represent a globally recognized quality management system qualification. While not a legal mandatory requirement, it is widely accepted worldwide as credible proof of consistent product quality. Possessing ISO certification demonstrates that your enterprise implements standardized quality control workflows, enabling stable production of items that satisfy customer expectations and official regulatory criteria.
Company Profile
Headquartered at Wu'an Industrial Park in Hebei Province, SND has achieved sustained growth over the years and evolved into a comprehensive industrial manufacturer integrating independent design, R&D, manufacturing and global sales.
As a professional casting manufacturer with over a decade of experience, SND Foundry focuses on the production and supply of ductile iron manhole covers, drainage gratings, industrial valves, pipes, pipe fittings and custom metal casting components. Our factory is equipped with two vertical casting production lines, one horizontal production line and a fully automatic coating line. We also deploy core shooting machines and a dedicated manual molding workshop to fulfill large-scale customized OEM orders. Supported by an in-house design team and professional technical staff, we are able to deliver complete one-stop solutions for all clients.
Our cast products are widely applied across numerous infrastructure sectors including rail transit, highway systems, airports, campuses, public constructions, residential communities and military security facilities. Thanks to sophisticated manufacturing machinery, rigorous production quality control and a customer-oriented mindset, we have built long-term credibility among partners. Our merchandise enjoys strong domestic demand nationwide, alongside steady exports to India, Singapore, the Middle East, Mexico, the US, European nations and many other global markets.
FAQ
Q: What material are your linear drain covers made of?
A: They are cast from QT500-7 ductile iron, which has much higher toughness and impact resistance than ordinary gray cast iron, not easy to break under vehicle rolling.
Q: What load-bearing grades do you supply?
A: We provide full EN124 standard load classes: B125, C250, D400, E600, F900, suitable for sidewalks, parking lots, municipal roads, heavy truck lanes and airport runways.
Q: Is the grate anti-slip?
A: Yes. Anti-slip texture is integrally cast on the surface, effectively preventing slipping for pedestrians and vehicles in rainy weather.
Q: Can the covers resist snow melting agent and rainwater corrosion?
A: QT500-7 ductile iron plus complete surface coating can withstand long-term erosion from rain, snow melting salt and weak acid rain.
Q: Can I customize the size and slit shape of the linear drain grate?
A: Custom length, width, slit width, hole layout and lock structure are all acceptable. We can match all resin or concrete linear drainage channels.
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