This durable Square Cast Iron Manhole Cover is made from high-strength, elastic QT500-7 cast iron, featuring ballizing treatment, annealing, and precision casting. It provides excellent load-bearing capacity, impact and corrosion resistance, anti-theft design, anti-slip surface, and noise reduction, ideal for municipal, residential, park, parking lot, and road inspection wells.

Our Square Cast Iron Manhole Cover is manufactured from high-strength QT500-7 spheroidal graphite cast iron, combining durability, elasticity, and reliability. Precision casting, ballizing treatment, and annealing processes ensure superior quality, making it ideal for a wide range of municipal and industrial applications.
We provide a variety of standard sizes and can also customize dimensions according to customer requirements. The details are as follows:
| Product | Specification |
|---|---|
| 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 | Packaged according to customer’s requirements, model, and quantity |
| Weight | Different sizes have different weights. We provide weight information based on customer’s requirements for each model |
| Modes of Packing | Simple bundling / Tray packaging |
This table includes both standard circular and square options, including Square Cast Iron Manhole Cover suitable for municipal and industrial infrastructure.
The spheroidal graphite structure provides superior tensile, bending, and impact resistance compared to ordinary cast iron. This reduces the risk of fractures and extends the service life.
Suitable for heavy-traffic municipal roads, expressways, and main thoroughfares. The anti-theft locking mechanism requires special tools to open, effectively preventing theft and loss.
The patterned surface ensures excellent grip even in wet conditions and maintains long-term durability under continuous traffic.
Our Square Cast Iron Manhole Cover is widely used in:
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.