by webmanager webmanager

Why choose ductile iron manhole cover over cast iron?

ductile iron manhole covers

When it comes to manhole covers, traditionally, they are made using cast iron. But over the years with the introduction of new and improved forms, ductile iron has proven itself as a great alternative. Many pieces of research later, it has been found that ductile iron is considered a better choice than cast iron because it can resist the same traffic loads with relatively lower self-weight and are less brittle than cast iron. Here is a list of its core strengths:

Bend It Like Ductile

Unbreakable yet bendable, ductile iron manhole covers are made from materials like carbon, silver, sulfur and magnesium. These materials tend to add strength and make it more durable in the longer run. But apart from lending to the superb quality, ductile iron manhole covers are easily bendable and have zero risks of breaking. This makes it a perfect choice as it contributes to structural agility.

Easily Compressible

The compressive strength of any metal contributes majorly to its choice of application. To further define, ductile iron has higher compressive strength as compared to any other form of metal. This form of metal can withstand any shape and any intensity of strength thus they prove to be better than cast iron.

Corrosion resistance and core strength

Manhole covers take the brunt of all-natural bodies like rain, sun, frost, and all its extremities. What works wonders, in this case, is the fresh coat of polish that can support the cause. Ductile iron, fortunately, is wear-resistant and corrosion-resistant and does not require the polish to function smoothly. Not only that, but the corrosion resistance also adds to the overall life of the manhole covers.

Low maintenance

Ductile iron, owing to all its properties, is extremely low maintenance and does not pose any harm to the safety hazards of the workers. Since they are easy to lift, low on weight and easy to clean, the pipe maintenance and other sewage conditions make it an ideal choice. It is way less brittle than cast iron thus is designed to be in the manhole frames and holds them perfectly.

To know more about ductile iron manhole covers, visit www.govindsteel.com and read about their history, experience and the high-quality manhole covers provided by them.www.govindsteel.com.

by webmanager webmanager

Manhole Covers: History, Characteristics & More

There are many everyday objects that we come across and never wonder about. From something as simple as a comb while grooming ourselves in the morning to the manholes we cross over as we walk down the roads. Have you ever wondered what goes behind making the cover of a manhole? Manhole covers date back to the era of ancient Rome when they were made of stone.

Manhole covers, as we all know are the removable lids atop a manhole, usually big enough for a person to pass through. They are used to access underground pipelines and vaults. They started off as slabs of stones and sometimes, pieces of wood and this continued till the 18th Century. In the 19th Century, modern ductile manhole covers were developed. For the last 200 years, manhole covers are made of cast iron in varied designs.

While circular manhole covers are what we frequently come across, manhole covers are also available in different shapes like rectangle and square and varied sizes. There are also triangular manhole covers in some parts of the world. Here are some interesting characteristics of different types of manhole covers:

  • Choosing the right cover: When searching for the right manhole cover, many factors have to be considered. Construction, dimension specification, as well as the positioning of the manhole, have to be kept in mind while purchasing the manhole cover.
  • Division as per weight: Different manhole covers weigh differently, depending on the load they have to deal with. A manhole cover on an airport runway will have to be much heavier than a cover on the road, whereas one on a pavement which has only pedestrians and cyclists is lighter.
  • Locking of manhole covers: As an extra measure of security, manhole covers have the option of being locked up or welded, especially in case of manholes on roads where racing occurs. It may sound bizarre, but often manhole covers are stolen to be sold as metal scrap.
  • Difference between shapes: A round manhole cover is often chosen because the chances of it falling through its circular opening are very low whereas it is possible with square covers. They are much smoother, have smaller surface area, are easily movable as well as easy to lock in place.

Ductile manhole covers and manhole frames are invisible products that make our life smoother. Made of cast iron, they are sturdy and essential for the running of any city. Govind Steel, a leading foundry in India constructs varied types of manhole covers and frames as well as manhole grates. They have different shapes, sizes and designs along with other cast iron and steel products. To check out their vast range of products, visit http://www.govindsteel.com.