Sewage cast-iron pipes and their technical characteristics

Advantages of cast-iron pipes

pipe made of gray cast iron is characterized by its fragility.Its manufacture takes place by centrifugal casting, which means that it does not tolerate blows.Petroleum bitumen layer inside and the outside of the pipeline is protected from corrosion.By the way, the cast-iron drainage is more resistant to corrosion than steel.Furthermore, this coating makes the smooth surface of the product and therefore reduces the coefficient of friction.

socketed cast iron pipes have the extension.Its value depends on the diameter of the articles.Between the pipe socket and the outside with the inner side there is a gap that can be 6mm (for tubes, 50 and 100 mm) or 7mm (for pipes of 150mm).

Fittings provide a means of connection elements.Cast iron drainage pipes can be of various sizes.The visitors provided range of sizes, with an indication of the diameter cast iron pipe.

to drain waste water from the toilet suitable diameter of 100mm, and for sinks and sinks diameter half.

cast iron sewer will serve their owners for about 80 years.Such pipes are strong and we can safely say durable.

But, of course, there are drawbacks:

• high costs of material;
• surface roughness;
• weight;
• complexity of dismantling;
• cost.

main features of the installation at the connection of cast iron sewer pipes Pig-iron sewer

connected via sockets that are located on the end of the pipe.Self assembly consists of the following stages:

1. The funnel tube is installed a second pipe (end without the funnel).
2. With tow seal the gap between the pipes.Its hammer inside a wooden spatula, tapping it with a hammer.
3. caulking is stopped when the gap is filled by 2/3.
4. fill the rest of the special seal.
5. The funnel is filled with cement mortar.
6. compacted cement in the socket.
7. cloth moistened with water is placed on the surface of the solution (in order to avoid cracks in the solution when it is dry).

installing cast iron pipes make sure their sealing.Instead of grout can be used silicone sealant or asbestos-cement mixture.

main features of the installation when connecting iron sewer pipes with plastic

To make high-quality and reliable connections in the iron and plastic pipe use couplings and various adapters.Looks process as follows:

1. clean internal surfaces of the socket (to metal) and well dried.
2. The funnel carefully apply silicone sealant so that it can penetrate into the pores.
3. sealant is applied to the adapter part, which is inserted into the socket.

main features of removal and repair of cast iron sewer pipe

This process is very time consuming.Among the tools required Bulgarian.Plus, do not forget to watch out for their safety: Use a respirator and goggles.

By dismantling, do not use a hammer.We have already said that the cast iron brittle, so it may have to drop out and get a piece of the pipe, thereby reducing the lumen flux.Use a rubber or wooden packing.The product can not sawing completely enough to make a small incision and try to move the part.Cracks and pipe break away.

If you need to repair a crack, enough to impose on it the rubber gasket (2-3 pcs.), Which is pressed against the metal plate.The tape crimped hoops with screws.Crack is cut first, then deepen the scraper.At the end of the procedure it is to degrease and apply crack a mixture of copper powder and phosphoric acid oxides.Remember that the mixture hardens very quickly.

As you can see, the cast-iron sewer has its advantages and disadvantages, so before changing the tube home, carefully check out each of them.