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China D400 Ductile Iron Square Manhole Cover Suppliers - High-Quality Factory Products for Urban Use
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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
Our rectangular manhole covers have numerous advantages over other types of covers:
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Optimized Layout Design: The rectangular shape of the covers makes them more suitable for installation in narrow and elongated areas compared to circular manhole covers, making them ideal for space-limited urban areas.
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Heavy Load Capacity: The covers can withstand loads of up to 40 tonnes, making them highly suitable for high-traffic zones and industrial environments where heavy vehicles and machinery are common.
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Weather & Corrosion Resistance: Coated with materials like bitumen, powder coating, or epoxy, these covers resist harsh weather, rainfall, snow, saltwater, and chemical agents like oil and gas.
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Easy Maintenance: Lightweight build enables easy installation and removal without heavy machinery, offering a cost-effective solution for long-term maintenance.
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!
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 |
Frequently Asked Questions
Q: Why are rectangular manhole covers preferred in urban areas?
Rectangular manhole covers are ideal for narrow and elongated spaces. Their design fits square or rectangular openings perfectly, making installation and handling much more efficient in densely populated urban settings.
Q: What materials are used to manufacture these manhole covers?
They are made from high-quality ductile iron (which offers higher strength and shock resistance) or grey iron (known for robustness and wear resistance).
Q: What is the maximum load capacity of the rectangular manhole covers?
Our rectangular manhole covers are tested and designed to sustain heavy loads of up to 40 tonnes (D400 class), making them safe for high-traffic roads and industrial areas.
Q: How do you protect the covers from environmental corrosion?
To extend their lifespan, the covers are coated with protective coatings such as bitumen, powder coating, epoxy, or a combination of these treatments, resisting rain, snow, saltwater, oil, and gas.
Q: What sizes and thicknesses are available?
We offer a wide range of standard sizes from 400x400mm up to 1200x1200mm, with thicknesses of 40mm, 50mm, and 75mm, as well as frame depths of 75mm and 100mm.
Q: Are these manhole covers easy to install?
Yes, their lightweight design makes them easy to install, clean, and remove without the need for heavy machinery, lowering overall maintenance costs.