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China EN124 D400 Ductile Iron Rectangular Manhole Covers - Quality Suppliers & Factory Direct
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Introduction
At present, the use of rectangular manhole covers has become increasingly popular in urban areas. In densely populated areas, the use of rectangular manhole covers has taken precedence over the circular ones, due to their relative ease of use and efficient handling. Their rectangular shape makes them more suitable for installation in narrow and elongated urban spaces, and for covering rectangular or square-shaped openings.
Our rectangular manhole covers come in various sizes and in ample quantities to meet your business needs. They are manufactured according to international standards and are suitable for use in different environments, including urban and rural areas. In this product introduction, we will delve deeper into what makes our rectangular manhole covers unique and explore their advantages and benefits.
Product Design
Our rectangular manhole covers are made from high-quality materials that are both durable and long-lasting. They are manufactured using casting technology, which guarantees the quality and durability of the product. The covers are designed and tested to sustain heavy loads and resist damage from environmental factors, such as weather and corrosion.
Our rectangular manhole covers come in a variety of sizes to meet your needs. They can range from 400x400mm up to 1200x1200mm, depending on the size of the opening that you need to cover. The covers are available in different thicknesses, including 40mm, 50mm, and 75mm to suit various uses.
Product Materials
We use high-quality materials to manufacture our rectangular manhole covers. The covers are made from either ductile iron or grey iron. Ductile iron is more shock-resistant and offers higher strength, while grey iron is more robust and offers good wear resistance.
The covers are also coated with various materials to extend their lifespan and prevent weathering and corrosion. We can apply various coatings to the covers, including bitumen, powder coating, epoxy, and in some cases, a combination of coatings.
Product Advantages
Optimized Shape Design
The rectangular shape makes them more suitable for installation in narrow and elongated areas compared to circular covers, making them ideal for densely populated urban spaces.
Heavy Load Bearing (Up to 40T)
Withstands loads up to 40 tonnes, making them optimal for high-traffic areas with frequent heavy vehicles and industrial sites with heavy machinery.
Weather & Chemical Resistance
Enhanced resistance to rainfall, snow, saltwater, and chemical agents like oil and gas ensures longevity in challenging environmental conditions.
Easy Installation & Maintenance
Lightweight design allows installation and removal without heavy machinery, making regular maintenance and cleaning cost-effective and straightforward.
Product Parameter
| Class | Frame Size (mm) | Clear Opening (mm) | Depth (mm) | Unit Weight (kg) | Specification |
|---|---|---|---|---|---|
| D400 | 400*400 | 300*300 | 75 | 20 | ductile iron; single seal; closed key hole |
| D400 | 500*500 | 400*400 | 100 | 29 | |
| D400 | 550*550 | 450*450 | 100 | 37 | |
| D400 | 600*600 | 500*500 | 100 | 42 | |
| D400 | 700*700 | 600*600 | 100 | 58 | |
| D400 | 800*800 | 700*700 | 100 | 77 | |
| D400 | 900*900 | 800*800 | 100 | 99 | |
| D400 | 1000*1000 | 900*900 | 100 | 149 | |
| D400 | 1100*1100 | 1000*1000 | 100 | 180 |
Conclusion
Our rectangular manhole covers are ideal for any business operating in urban or industrial areas. Their superior design, strength, and resistance to wear and tear make them ideal for installation in high-traffic areas. They are easy to install and maintain, making them a cost-effective solution for businesses looking to reduce their maintenance costs.
We guarantee the quality of our rectangular manhole covers, and we're happy to answer any questions you may have about our products. We're confident that you'll be satisfied with the quality and performance of our products, and we look forward to working with you!
Frequently Asked Questions (FAQ)
What load capacity do your rectangular manhole covers support?
Our D400 class rectangular manhole covers are engineered to withstand heavy loads of up to 40 tonnes, making them suitable for heavy traffic areas and industrial facilities.
What materials are used to manufacture these covers?
They are primarily manufactured using high-quality ductile iron (for higher shock resistance and tensile strength) or grey iron (for superior wear resistance), produced via advanced casting technology.
What protective surface coatings are available?
We offer various protective coatings including bitumen, epoxy, and powder coatings to ensure robust protection against harsh weather, saltwater, and chemical agents like oil and gas.
Why choose rectangular covers over circular covers?
Rectangular covers fit naturally into narrow walkways, straight trenches, and elongated municipal openings, providing easier handling and better space utilization in dense urban environments.
What standard sizes and dimensions are available?
Standard frame sizes range from 400x400mm to 1100x1100mm (with clear openings from 300x300mm to 1000x1000mm) and depths ranging between 75mm and 100mm. Custom dimensions are also available upon request.
Are these manhole covers easy to install and maintain?
Yes, they are designed for efficient installation and removal without requiring heavy machinery, significantly lowering long-term maintenance costs and labor effort.