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Do you know the Performance cast iron sewer pipe ?

Oct. 10, 2020

As a cast iron sewer pipe supplier, share it with you.

1. Low noise, high strength, long life

The water flow of the drain pipe is in a state of non-filling and gravity flow, and friction, shock, and vibration are inevitable.

The graphite in cast iron buffers vibration energy, prevents the transmission of vibration energy between crystal grains, and converts vibration energy into heat energy. Therefore, cast iron pipes have good vibration and noise reduction properties. The test data shows that when the flow rate of the DN100 pipeline is 2.7L/s, the noise value of the cast iron pipe is 46.5dB, and the noise value of the U-PVC pipe is 58dB. Therefore, it is required for quiet residential buildings, schools, hospitals, conference venues, hotels, etc. , Cast iron drainage pipe should be used.

The tensile and bending strength of cast iron is 4 times that of the commonly used plastic pipe PVC.

The matrix structure of cast iron has small potential difference, small electrochemical effect, and high silicon content. It can form a continuous SIO2 protective film on the surface, so its corrosion resistance is much higher than that of steel. In the same environment and medium, the resistance of cast iron is Rustiness is more than 3 times that of steel.

The excellent corrosion resistance and strength characteristics of cast iron drainage pipes make the service life much longer than steel pipes and plastic pipes.

Cast iron pipe is much denser than PVC. The water falling from the vertical chimney does not have enough energy to vibrate the cast iron. However, PVC will vibrate as easily as bass drums on walls and ceilings.

Older houses almost always have cast iron drain pipes and vertical chimneys. Cast iron is dense, and it is difficult to vibrate and generate noise. The new cast iron pipe is much better than the old cast iron pipe. The plumber used rubber seals and large stainless steel band clamps to connect one piece to each other. It is easy to adjust and requires only a little work to install. You don't need to make the whole house with cast iron to eliminate noise.

Cast iron is a very durable material. The pipes made of it are durable and can last 80 to 100 years. However, the actual life depends on many factors, and in some cases, cast iron pipes may start to fail long before then.

Modern cast iron drain pipes are completely different from the cast iron pipes poured into molds a few years ago. With the same wall thickness, cast iron can be used for hundreds of years.

Yes, the cast iron pipe meets the specification. It is durable and fireproof, specially used for large high-rise and public institution buildings.

Cast Iron Drain Pipe

cast iron sewer pipe

2. Flexible seismic resistance

The linear expansion coefficient of cast iron is relatively low, so the amount of expansion and contraction caused by the environmental temperature is small. At the same time, the flexible interface structure of the cast iron drainage pipe makes it have high resistance to expansion, flexural deformation and earthquake resistance, and the system is axially deformed 35mm, no leakage at the interface within 31.5mm of lateral vibration and deflection value.

3. High temperature resistance, flame retardant and fireproof

The drainage pipe has the characteristics of penetrating and connecting each floor and room. In the event of a fire, if the drainage pipe is easy to melt and has poor flame retardancy, it will melt and burst quickly to form a smoke stove effect. The fire-retardant and high melting point of cast iron pipe is that it has good fire-retardant properties.

4. No secondary pollution, renewable recycling

The cast iron material itself does not contain chemical toxins, and will not cause secondary pollution to pollution and wastewater. When the building or drainage pipeline is dismantled, the cast iron drainage pipe can be 100% recycled and recycled.

5.Performance parameter

Compared with other metal pipes and plastic pipes, cast iron drainage pipes have some unique advantages, which are mainly reflected in the aspects of high strength, low noise, long life, flame retardant and fireproof, flexible earthquake resistance, no secondary pollution, and renewable recycling.

Our company also has Cast Iron Drain Pipe on sale, welcome to contact us.

and with these performance, we can know cost of replacing the cast iron sewer pipe (cast iron drain pipe) under the house

If your house was built before 1970, then you might consider the cost of replacing the cast iron drain pipe laid under it.

Yes, cast iron is a very durable material, and pipes made of it are durable and can last 80 to 100 years. However, the actual life depends on many factors, and in some cases, cast iron pipes may begin to fail long before then.

If your house was built in the 1930s or 1940s, your plumbing is approaching the end of its life and will undoubtedly start to have problems. However, even houses built in the 1960s began to have problems with cast iron pipes. A common problem with old houses is that the trees in the yard are also old. In many cases, their roots extend all the way to the pipe. The roots of the trees do not get along well with the pipes.

Therefore, we hate to be bearers of bad news, but we cannot avoid the fact that cast iron pipes need to be replaced at some point. However, you may already know it, and that is why you are here.

So, how do you know when to replace the drain? Well, let's now look at some things to note...


How do you know the shape of the cast iron sewer pipe is not good?


Peculiar smell or water discoloration

Do you smell the sewer exhaust in your home? If so, the pipe may be broken. The brown or light yellow water flowing from the tap is the same as above. Discolored water is usually a sign of rust or corrosion, which means your cast iron pipe has begun to reach the end of its life.


Moldy walls

Mold on the walls may also indicate pipe breaks and leaks. It does not require much moisture to form mold. Even a slight increase in humidity caused by fine thread cracks can cause mold growth.


Poor drainage

After flushing the toilet or filling the sink, how fast does it drain? Poor drainage may indicate a problem with your plumbing. It should also be pointed out that the corrosive substances contained in the products used to clear the blockage are not good for cast iron pipes.


The lawn looks great

Are there dense green patches in the middle of the dry, burnt lawn? If so, your sewer may be leaking. Remember, sewage is not good for us, but plants absolutely love it. Therefore, pay attention to any specific areas on the lawn that look different.


Lawn or pavement indentation

A broken or leaking drain can form a pool under the lawn or driveway. If this condition lasts long enough, you will find that certain areas begin to sag and form dents. If you see anything that looks like this, you should contact the sewer maintenance contractor immediately.



Take any cracks in the foundation or walls seriously. They are one of the main symptoms of pipe damage and have disappeared for too long without repair. If you are not careful, sewage holes may even form.



Of course, needless to say, if you see an actual sinkhole anywhere on the property, then you must have encountered a serious problem somewhere. Don't waste any time. Contact a sewer professional immediately.


Infestation by insects and/or rodents

When you see cockroaches, flies or mice, sewer damage is not your first thought. However, they may indicate a crack in your pipe, preventing the pipe from entering your house. You will be surprised that cockroaches, rats and other nostrils can easily pass through the small gaps in the pipe. If you have been in contact with the pest control company and only later discovered that the problem has not been resolved, then it is time to begin to suspect that there is a problem with your pipeline.


Repair the problem of cast iron sewer pipe

It can be summarized like this:

You may win the battle, but not the war. In other words, for every problem you solve today, several questions will pop up tomorrow and require the same attention. This is because the pipe is just old and is starting to fail. If so, on-site repairs to repair the leak may waste time and money.

Of course, we know that replacing all cast iron drain pipes immediately can be expensive. This is why you may want to simply repair it.


The thing is...

The cost of all these repairs may actually add up, and in the end, you still need to replace the pipe. This is a short-term solution and will not pay off in the long run. If you are having trouble with certain pipe sections today, what do you think will affect your entire pipeline? If your pipes are all the same age, you will have problems elsewhere.

Ask the contractor whether the cast iron drain pipe can be replaced in stages. In other words, replace one tube today, another tube within six months, and so on.

Our company also has Cast Iron sewer pipe on sale, welcome to contact us.

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