MANHOLE COVERS
(Ductile Iron Manhole Covers+Ductile Iron Gratings)
Product Description
Ductile Iron Manhole Covers
Product Overview
Our Ductile Iron Manhole Covers are made of high-strength QT500-7 ductile iron, complying with EN124, GB/T 23858, and AASHTO M306 standards. They feature high load capacity, corrosion resistance, and anti-theft design, suitable for roads, highways, airports, and ports.
Product Specifications
| Item |
Specification |
| Material |
Ductile Iron (QT500-7) |
| Standard |
EN124, GB/T 23858, AASHTO M306 |
| Load Class |
A15/B125/C250/D400/E600/F90 |
| Size |
Φ600mm, Φ700mm, Φ800mm (Customizable) |
| Surface Treatment |
Hot-Dip Galvanized, Powder Coated |
| Anti-Theft Design |
Locking/Hinged System |
| Application |
Roads, Sidewalks, Airports, Ports |
Key Advantages
High Strength: Tensile strength ≥500MPa, more durable than cast iron.
Corrosion Resistance: Hot-dip galvanized + powder coating for 20+ years lifespan.
Multiple Load Classes: A15-F900 available for different applications.
Applications
Municipal Works: Roads, sidewalks, green belts.
Traffic Facilities: Highways, toll stations, parking lots.
Heavy-Duty Areas: Airports, ports, logistics hubs.
Industrial Zones: Chemical plants, power stations, sewage treatment.
Ductile Iron Gratings
Product Overview
Our Ductile Iron Gratings are manufactured from QT500-7 ductile iron, complying with EN1433 (European drainage standard) and GB/T 23858. Designed for high-flow drainage and heavy-duty load, they are ideal for urban roads, airports, and industrial zones.
Product Specifications
| Item |
Specification |
| Material |
Ductile Iron (QT500-7, ≥500MPa) |
| Standard |
EN1433, GB/T 23858 |
| Load Class |
B125/C250/D400 (E600 optional) |
| Common Sizes |
300×500mm, 400×600mm, 500×800mm |
| Drainage Openings |
Slotted/Honeycomb (30%-50% flow) |
| Surface Treatment |
Hot-Dip Galvanized (≥80μm) + Powder Coating |
| Anti-Theft Option |
Bolted/Hinged Design |
Competitive Advantages
Superior Drainage: 40% higher flow efficiency than standard gratings.
Extreme Durability: D400 grade withstands 40-ton truck loads without deformation.
Anti-Corrosion: Zinc + polymer coating for 15+ years service life.
Safety Compliance: ≤30mm gaps to prevent child accidents (EN124).
Customization: Available in logo engraving, non-standard sizes, and special loads.
Typical Applications
Urban Drainage: Roadside inlets, pedestrian walkways.
Transportation: Highway toll stations, service areas.
Aviation & Ports: Airport runways, container yards.
Industrial Parks: Factory roads, underground parking.
Main Products
About Us
Shanxi Chenhui Snowall Casting Group Co., Ltd.
Shanxi Chenhui Snowall Casting Group Co., Ltd. is a large integrated corporation specializing in mining, ore processing, sintering, iron smelting, and casting. With a total investment of 2 billion RMB, the company operates three smelting furnaces, twenty centrifugal casting units, five annealing furnaces, and five automated finishing lines. Its annual production capacity exceeds 1 million tons, including:
Ductile Iron Pipes: 500,000 tons (DN80mm-DN2600mm)
Flexible Cast Iron Drainage Pipes: 200,000 tons (DN50mm-DN300mm)
Ductile Iron Fittings: 200,000 tons (DN80mm-DN2600mm)
Ductile Iron Manhole Covers: 100,000 tons
Location & Logistics
Strategically located in southeastern Shanxi Province, the company serves as a vital gateway connecting Shanxi to Central China. It enjoys excellent transportation access:
Adjacent to the Taiyuan-Jiaozuo Railway, linking major rail lines like Tongpu, Shitai, and Jingguang.
Near the intersection of Jincheng-Jiaozuo, Taiyuan-Macao, and Jincheng-Houma Highways, with close proximity to National Highway 207.
Only 3 km from the nearest railway station, enabling efficient distribution via rail, expressway, and road networks.
Quality Assurance & Certifications
The company has invested heavily in a state-of-the-art casting product testing center, equipped with:
Metallographic, spectroscopic, physical, and high-temperature testing labs.
Advanced Production & Anti-Corrosion Technology
Zinc Coating: Adheres to ISO 8179, using 99.99% pure zinc wire for a 130g/m² coating (100-year lifespan verified by national labs).
Cement Lining: Complies with ISO 4179, using Portland cement 52.5, quartz sand, and water, cured via steam for 8 hours.
External Coatings: Options include tar asphalt, epoxy asphalt, epoxy resin, or polyurethane (eco-friendly, double-layer anti-corrosion).
Product Advantages
Mechanical Properties: High impact resistance, pressure tolerance, corrosion resistance, elongation, and easy installation.
Global Reach: Exported to 100+ countries (Middle East, Southeast Asia, South America), acclaimed for quality and after-sales service.
Corporate Vision
"Continuous improvement is our principle; customer satisfaction is our eternal pursuit." Committed to green manufacturing and low-carbon development, the company seeks global partnerships for mutual success.
Certifications
Awards & Recognition
"Shanxi Famous Brand Product" (Shanxi Brand Recommendation Committee)
"AAA Quality Credit Enterprise" (Shanxi Bureau of Quality & Technical Supervision)
"AAA Quality Integrity Unit" & "Consumer-Trusted Brand" (China Quality Integrity Promotion Association)
"AAA China Quality Credit Enterprise" (China Quality Credit Certification Center)
"Key Recommended Industry Leader in Zhejiang" (Zhejiang Industrial Economic Federation)
Compliance with GB/T 13295-2019 and ISO 2531 standards.
Certifications: ISO 9001 (Quality Management), ISO 14001 (Environmental Management), OHSAS 18001 (Occupational Health & Safety).
Packaging & Shipping
Contact us for quotes and technical support!
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