High-quality cast iron products for urban and industrial use

Reliance Foundry hardscape supplies are designed to work in any setting: from urban infrastructure to industrial environments. Our products include tree grates, trench grates, and detectable warning plates, and serve various functions from protecting greenspaces, offering drainage solutions, to improving accessibility. All hardscape products are made from high-quality cast iron and withstand rigorous conditions with no maintenance.

Reliance Foundry hardscape products are designed and manufactured in the USA, in compliance with the Buy American Act.

Tree Grates


Detectable Warning Plates

Tree grates

Tree grates protect trees and surrounding soil from bustling urban life. Their attractive, sophisticated features add aesthetic flair to city streets. The grate design ensures that moisture, light, and air are delivered to trees so they continue to thrive. ADA-approved tree grates conform to specific size and shape standards. Tree grates also act as a safe extension of the sidewalk, reducing tripping hazards for pedestrians.

Trench grates

Trench grates prevent flooding of open spaces that are subject to excess surface or rain water. This can include driveways, sidewalks, parking lots, roads, and loading areas. Trench grates collect excess water, ensuring the surface remains safe and dry for pedestrian and vehicular traffic.

Heavy-duty trench grates withstand extensive loads and are ideal for industrial environments such as loading docks and warehouses. Decorative trench grates have the same durability and load capacity as heavy-duty grates, but come in appealing designs for a mix of functionality and style. They are a perfect complement to the aesthetics of modern, urban infrastructure.

Detectable warning plates

Create an inclusive community by making city streets accessible for all pedestrians with detectable warning plates. Tactile surface indicators signal potential hazards, and mark the transition from sidewalk to street for pedestrians with visual impairment. They comply with current ADA and ABA guidelines. Made from durable cast iron, detectable warning plates virtually eliminate maintenance issues and can withstand heavy pedestrian, vehicle, and snowplow traffic. Whether in their natural patina state, or painted yellow, Reliance Foundry detectable warning plates provide ample visual contrast.

High-quality materials

All Reliance Foundry’s hardscape products are made from durable cast iron. Cast iron has excellent resistance to wear and will stand strong in any climate. It is low maintenance and ideal for use in both industrial and urban environments. Due to the casting process, cast iron has a high coefficient of friction that provides a safer, non-slip surface. This is especially important for hardscape as it is often exposed to water and snow, and surfaces must remain safe for pedestrians and vehicular traffic.

Painted finish

Cast iron trench grates and tree grates are finished with resilient black paint. Black adds a contemporary look to hardscape supplies placed in urban environments. Reliance Foundry’s high-performance paint finish provides a thick, uniform coating that has superior corrosion resistance. It is designed not to crack, chip, or peel, and offers a hard, protective layer against harsh outdoor elements.