- +86 13220956691
- zhu ce zhong...
This durable ductile iron manhole cover is made from high-strength, elastic QT500-7 cast iron. It undergoes ballizing treatment, annealing, and precision casting to ensure exceptional quality. The cover offers high load-bearing capacity, impact resistance, corrosion resistance, anti-theft design, anti-slip surface, and noise reduction performance. It is widely used in underground inspection wells for municipal, residential, park, parking lot, road, and other infrastructure projects.
| Spheroidal graphite cast iron round manhole cover | |
| product size | Can be customized according to customer requirements In-Stock Sizes：400mm*400mm 400mm*600mm 450mm*750mm 500mm*500mm 500mm*1000mm 600mm*600mm 600mm*800mm 600mm*1200mm 700mm*700mm 800mm*800mm 800mm*1000mm 900mm*900mm 900mm*1200mm 1000mm*1000mm 1000mm*1200mm 1000mm*1500mm 1200mm*1200mm 1200mm*1500mm 1500mm*1500mm 1500mm*2000mm |
| Packaging Dimension | Package according to the customer’s requirements, model and quantity. |
| weight | Different sizes, different weights. We will provide the weight based on the customer’s requirements for each model. |
| modes of packing | Simple bundling / Tray packaging |
Material: QT500-7
Structure: Integral / Divided, equipped with rubber shock-absorbing ring
Shape: Circular / Square
Load-bearing Grades: A15, B125, C250, D400, E600, F900 (customizable upon request)
Surface Treatment: Asphalt paint / Rust-proof paint
Operating Temperature Range: -30℃ to +80℃
Performance Features:
High Strength & Elasticity
The spherical graphite structure provides superior tensile, bending, and impact resistance compared to ordinary cast iron, reducing the risk of fractures and extending service life.
Stable Load-bearing Capacity
Suitable for heavy-traffic municipal roads, expressways, and main thoroughfares. The anti-theft locking design requires special tools to open, effectively preventing theft and loss.
Applicable Scenarios:
Urban municipal roads, expressways, and main thoroughfares
Residential areas, parks, schools, hospitals, and public squares
Parking lots, gas stations, and industrial parks
Inspection wells for water supply, drainage, electricity, communication, gas, and heating systems
Get in touch with us for product inquiries, customized solutions, partnership opportunities, and professional support to help your projects succeed.
Multiple transportation options: road, sea, and air freight to meet diverse customer requirements.
High-load, corrosion-resistant, theft-proof, lightweight manhole covers, customizable.
Premium ductile iron and composite resin provide excellent load-bearing capacity.
Surface treatment and material selection ensure long-term durability.
Lightweight for easy transport and installation, reducing construction costs.
Available in multiple sizes and specifications to meet diverse project requirements.
