Why are composite manhole covers an ideal substitute for cast iron manhole covers?

Why do we say that an industrial plastic product will replace the cast iron manhole cover? In fact, this statement is not absolute, this sentence is for the same standard products, because we all know that the current high cost of steel and metal, labor costs; we are too fast at this stage of urban development, many urban roads are not fixed, some regional departments road design life is only 5-10 years ,10 years later may be re-routing, laying subway, perhaps widening, building bridges, so the cost of considering or choosing industrial plastics is appropriate.

In addition to this, today’s society is not as in the past, most of our urban environmental road construction conditions are limited and prescribed, what kind of road allowed to drive what kind of transportation, in the situation that meet the load to meet the conditions of use, we do not need to pursue metal manhole cover, such as sidewalks, roadside drains, sewage from living communities, electricity, cable signal ditches, etc., the whole cast iron is not conducive to management, investment in large amounts of management funds to prevent theft is not as natural solution to the problem.

However, those who say cast iron manhole cover poor, can only be one-sided. In the current smelting process many manufacturers can not really control the content of sulfur and phosphorus, so that cast iron manhole manhole cover in cold and hot weather conditions are much weaker than expected, become more easily damaged, shorten the service life. Therefore, it is wise to choose composite material manhole cover in developing countries.

Why is composite manhole cover an ideal substitute for cast iron manhole cover?

1.Let’s first look at the difference between the composite manhole cover and the cast iron manhole cover:

2.Appearance: The composite manhole cover series products have smooth and beautiful appearance, can be colored and designed according to the design requirements. Cast iron manhole cover series products are easy to rust, corrosion, poor appearance effect.

3.Weight: Composite manhole cover series products light weight, about one third of the cast iron manhole cover similar products.

4.toughness: composite well cover series products good toughness, not easy to brittle. Cast iron manhole cover series products rigid, lack of toughness, easy to brittle.

5.Vehicle exercise: composite manhole cover series product cover seat close, balance no warp, bounce and other phenomena. Cast iron manhole cover series product cover seat is not close, the vehicle is easy to bounce when driving, the noise is big.

6.Maintenance: Because of its corrosion resistance, light weight, coloring, good sealing and other characteristics, the composite manhole cover series products are easy to identify and daily open maintenance, effectively reduce the maintenance of labor costs and expenses of renewal costs. Cast iron manhole cover series products are heavy, easy to rust and corrosion, easy to lose, increase maintenance difficulties and renewal costs.