What are the advantages of Ductile gratings?

In terms of mechanical properties

1. High strength: The tensile strength ób≥420MPa, and the yield strength ós≥300MPa, which is equivalent to that of low-carbon steel and about three times that of gray iron materials. It can withstand large loads, including being rolled by vehicles.

2. Good toughness: The impact value is similar to that of medium-carbon steel and more than 10 times that of gray iron materials. It is not easy to break and damage under impact, vibration and other circumstances, reducing the risk of sudden damage.

3. Good fatigue resistance: It has good resistance to loads that are repeatedly applied such as vehicles in the long term.

In terms of physical and chemical properties

1. Good corrosion resistance: In the water spray corrosion test, the corrosion amount in ninety days is only 1/40 of that of the steel pipe and 1/10 of that of the gray iron pipe. It can maintain good stability in a moist and somewhat corrosive environment (such as sewage, rainwater, etc.).

2. Oxidation resistance: In most municipal application environments, its oxidation resistance is better than that of cast steel.

3. Good wear resistance: It is not easy to be worn after long-term use and can maintain the flatness and integrity of the manhole cover surface.

In terms of casting and cost

1. Good casting performance: Compared with cast steel, its casting fluidity is better and the shrinkage is relatively small, which is convenient for producing manhole covers with more complex shapes.

2. Cost advantage:

- It has a lower cost than cast steel, making it more popular in the market.

- Due to its high strength, under the requirement of achieving the same bearing performance, it can be thinner and lighter than other materials (such as gray cast iron, etc.), saving material cost to a certain extent.

In terms of practicality and other aspects

1. Safety:

- The combination of good strength and toughness ensures the safety during use.

- Some Ductile gratings are equipped with anti-falling devices (such as anti-falling nets, etc.), further improving the safety protection for pedestrians.

2. Good anti-theft performance: Compared with traditional cast iron manhole covers (or other manhole cover materials with recycling value), Ductile gratings can improve the anti-theft performance through some special designs (such as installing anti-theft chains, anti-theft locks, etc.) and the characteristics of the material itself (it is difficult to recycle due to integral casting, etc.).

3. Appearance: After being treated with anti-rust asphalt paint, etc., the appearance is relatively clean and beautiful, and the surface can be sprayed with different colors according to environmental needs.

4. Convenient installation: It is about 30% lighter than the traditional gray cast iron manhole cover, which is convenient for handling and installation.

5. Wide applicability: It is widely used in various parks such as municipal roads, expressways, communications, power, tap water, communities, schools, etc.