Trench Grates & Manhole Covers | Luoyue Metal

Product Overview

Trench grates and manhole covers are critical components in urban drainage systems and industrial facilities. Luoyue Metal offers a full range of high-strength drainage covers, available in cast iron, ductile iron, stainless steel, and composite materials. Our products are designed for municipal roads, commercial plazas, industrial parks, residential communities, and various industrial applications. Each cover is manufactured in strict accordance with load class standards, ensuring safety, drainage efficiency, and long-term durability.

Key Advantages

1. Safety Protection – Full Load Class Range

• Manufactured to meet EN124, GB/T 23858, and other international/national standards

• Available in all load classes: A15, B125, C250, D400, E600, F900

• Anti-slip surface patterns for pedestrian and vehicle safety

• Optional anti-displacement and anti-theft designs for high-security areas

2. Efficient Drainage – Flood Prevention

• Optimized open area with maximum flow capacity exceeding 40%

• Rapid discharge of rainwater, surface runoff, and industrial wastewater

• Helps reduce urban flooding risks and ensures continuous operations in industrial settings

3. Self-Cleaning & Filtration

• The grating structure blocks large debris, reducing pipe blockages

• Lowers maintenance frequency and extends the service life of drainage systems

4. Corrosion Resistance – Suitable for Harsh Environments

• Ductile iron: high strength and impact resistance, ideal for heavy-duty roads

• Stainless steel 304/316: acid and corrosion resistant, perfect for chemical plants and coastal projects

• Composite materials: lightweight, non-conductive, and theft-resistant, suitable for landscaping and pedestrian areas

5. Aesthetic Appeal & Custom Options

• Various surface textures and colors available

• Can be designed for invisible installation by embedding into pavement

• Custom logo, text, or project name engraving available

Material Options

• Ductile Iron: QT500-7 / QT600-3, high tensile strength and toughness, suitable for heavy loads and high-impact environments.

• Stainless Steel: 304 / 316L, press-formed or welded, corrosion resistant, ideal for food processing, pharmaceutical, chemical, and coastal applications.

• Composite Materials: BMC / SMC compression molded, lightweight, high strength, with no scrap value for enhanced theft resistance.

• Cast Iron with Pavement Insert: Features a recessed surface for embedding bricks or asphalt, achieving an invisible cover effect.

Typical Applications

• Urban arterial roads, expressways, and viaducts

• Commercial complexes, plazas, and pedestrian streets

• Industrial factories, logistics parks, ports, and mining sites

• Residential communities and underground parking entrances

• Airport aprons and runway drainage systems

• Stadiums, parks, and landscaped areas

Custom Services

Luoyue Metal offers custom solutions based on your drawings:

• Non-standard sizes and shapes

• Custom anti-slip patterns

• Locking mechanisms, hinges, and vibration-damping gaskets

• Company logos, project names, and load class markings

Why Choose Luoyue Metal?

• Extensive Experience: Over a decade of focus on the R&D and manufacturing of drainage products.

• Strict Quality Control: Full-process inspection from raw materials to finished products ensures compliance with standards.

• Reliable Delivery: Stable production capacity supports large-scale projects with on-time delivery.

• Comprehensive Service: Provides product selection guidance, drawing customization, and on-site technical support.

Contact Us

Luoyue Metal – Reliable Drainage, Down to the Details

• Website: www.lyapm.com

• Tel: +86 16628500844

• Email: Info@lyapm.com