Plastic Hose Is Being Gradually Replaced By Iron Pipe
In the selection of drainage pipes in many projects now, many of them are chosen to use PVC drainage pipes to eliminate the common cast iron drainpipes in the 80s and 90s of last century. So what are the advantages of PVC drainage pipes relative to the cast iron pipes?
1. Light pipe and convenient construction
For a long time, because of the large proportion of drained cast iron pipes, and the installation of linen, interfacing materials, twisting and maintenance during installation, the construction is not only heavy, but also the installation time is very long, so the construction benefit is obviously reduced. The proportion of PVC drainage pipe is about 1.4t/m3, only L / 5 of cast iron pipe, the same length of plastic pipe is much lighter than that of cast iron pipe. It only needs to be handled manually when installation, and the PVC drain pipe adopts socket type dissolving interface. At the same time, its standard length (6m, 4m) is longer than cast iron pipe, reducing the number of interface and reducing the number of interface. The installation process. For example, a standard 6m long DN110 plastic pipe can be installed only one person, and the cast iron pipe is 2~3 people, so the installation time can be reduced by more than 60% and the installation cost can be reduced by more than 50%. For the construction unit, it can save expenses, reduce the cost, shorten the period of the project, and also improve the economy of the building.
2, good drainage performance
According to the annular water film gravity theory, the maximum water discharge capacity of the plastic riser is 60% more than that of the cast iron pipe when the drainage area is not more than the 1/3~1/4 of the riser area, and it does not cause the damage of the water seal. Therefore, for the same equivalent discharge, the diameter of the PVC drain pipe can be smaller than that of the cast iron pipe. Or the same diameter of the same diameter can be used as small gradient as possible within the scope of the standard license, which can increase the net height of space, which is more favorable to the user and enhances the function of the building.
3. Economy and beauty
According to the current market situation, the PVC drainage pipe price is only about 80% of the cast iron drain pipe, that is to say, the building cost per 1000 square meters per unit cost is less than 700 yuan lower than the cost of the cast iron drain pipe. In addition, because of the lighter PVC pipes, the transportation cost has also been significantly reduced.
PVC drainage pipe is usually white, and it is not used as the anticorrosion treatment of the paint brush red Dan, silver powder and so on. It does not exist such as the rust and shedding of the outer wall of the cast iron pipe. It does not need regular maintenance and care in the dark loading of the pipe, and the bright loading is more obvious than the cast iron pipe. Living and working environment also facilitate the property management of buildings.
4, good social benefit
Today, with the shortage of steel supply in China, PVC drainage pipe can replace other steel drainage pipes in a wide range, and greatly reduce the energy consumption in the process of steelmaking, and can also reduce the environmental pollution caused by this process. It has good social benefit.
5, superior physical and chemical properties
PVC tube is a thermoplastic product, which is heated by PVC into molten state (150~200 C) and contains about 56% of the specific flame retardant chlorine (Cl). Therefore, the oxygen index is high, it is a refractory material, it is a refractory material, and the chemical properties are stable. The special mechanical and physical properties make it can be used for 50 years, and its corrosion resistance, aging resistance and wear resistance are also made to the same time. The water cast iron pipe and cement pipe can be used more steadily for a long time, which reduces the frequency of maintenance, reduces the cost of operation and the natural loss of the material, is beneficial to the long-term use of the building, and also increases the safety and reliability of the building.