The difference between Hainan nodular cast iron manhole covers and composite manhole covers is that they are different from each other in terms of materials. Therefore, when we use them, we should not only choose the quality of the products correctly, but also learn to analyze which materials are safer. Then we will make a comparison between them.

1. Appearance: The composite well cover series products have a smooth and beautiful appearance. It can be colored and designed according to design requirements. The product is easy to rust and be corroded, and the appearance effect is poor.

2. Weight: composite manhole cover series products are light, about one-third of the same kind of cast iron products.

3. Toughness: composite manhole covers have good toughness and are not easy to be brittle, while cast iron manhole covers have strong rigidity, lack toughness and are easy to be brittle.

4. Driving condition of the vehicle: the cover seat of the composite well cover is tightly combined, and there is no tilting, bouncing and other phenomena in balance. However, the cover seat of nodular cast iron manhole cover series products is not tightly combined, so the vehicle is easy to bounce when driving, and the noise is large.

5. Maintenance condition: because of its corrosion resistance, light weight, colorability, good airtightness and other characteristics, the composite well cover series products are easy to identify and daily open maintenance, and can effectively water the labor cost of maintenance and expenditure of renewal costs. Ductile iron manhole cover series products are heavy, easy to rust and corrosion, and easy to lose, which increases the difficulty of maintenance and renewal costs.

6. Unit cost analysis: the unit cost of composite well cover is 40% lower than that of cast iron well cover series products.

Nodular cast iron manhole covers and composite manhole covers have their own outstanding features and advantages, as well as their own application scope. Therefore, it is important to choose products that do not only focus on the appearance and material, but also whether they are corrosion resistant and suitable for the current environment. There's more Please pay attention to the official website of Hainan Plastic Industry Co., Ltd.