topper
The Performance Comparison between Steel Pipes and FRP Pipes-Part 2
Aug 30, 2021
da***********01
On this page
4. Light weight, high strength and convenient transportation and installation. The installation of socket connection is quick and simple. Therefore, the lifting cost is reduced and the installation speed is improved.
5. Small friction resistance and strong transportation capacity. The inner wall of FRP pipes is very smooth and the rough and friction resistance is very small. The roughness coefficient is 0.0084, while the n value of concrete pipe is 0.014 and the n value of cast iron pipe is 0.013. Therefore, the FRP pipe can significantly reduce fluid pressure loss along the path and improve the conveying capacity.
What's more, it can bring significant economic advantages:
(1) If the conveying capacity is the same, the smaller diameter of FRP pipes can be selected for the project to reduce one-time project input.
(2) With the same inner diameter of the pipe, the pumping costs can be saved if FRP pipes are used. It also shortens the pumping time and reduces long-term operation costs.
6. Good electrical and thermal insulation. FRP is a non-conductor and the electrical insulation of the pipe is excellent. The insulation resistance is between 101 to-1015 Ωcm. The most suitable places are in the transmission, telecommunications lines concentrated areas and multi-minefields. The heat transfer coefficient of FRP is very small. It is only 0.23, which is 5 % of steel, and the heat preservation performance of steel pipes is excellent.
7. Good wear resistance. The water containing a large amount of mud, sand and gravel was loaded into the pipe to carry out a comparative test on the effect of rotational wear. After 300 million rotations, the wear depth of the inner wall of the pipe is as follows: the wear depth of steel pipes coated with tar and enamel is 0.53mm, and the wear depth of steel pipes coated with epoxy resin and tar is 0.52mm. This shows that it is quite wear-resistant.
8. Low maintenance cost. Because of the above corrosion resistance, wear resistance, frost resistance and pollution resistance, the project does not need to rust, pollution prevention, insulation, insulation and other measures and maintenance. There is no need for pole resistance protection for buried pipes, and the project maintenance cost can be saved by more than 70%.
9. Strong adaptability. FRP pipes can be customized based on users’ various specific requirements, such as different flows, different pressures, different buried depths and load conditions. The pipe can be designed and manufactured for different pressure grades and stiffness grades.
10. Long engineering life. Safety can be the best. According to the laboratory simulation test, the suitable life of FRP pipes can reach more than 50 years.
11. The comprehensive benefit of the project is good. The comprehensive benefit refers to the long-term benefit formed by various factors such as construction investment, installation and maintenance costs, service life, energy saving and steel saving. The combined benefit of FRP pipes is desirable. In particular, the larger the pipe diameter is, the lower the cost is. When it is further considered that the buried pipes can be used for several generations without annual maintenance, it can show its superior comprehensive advantages.
5. Small friction resistance and strong transportation capacity. The inner wall of FRP pipes is very smooth and the rough and friction resistance is very small. The roughness coefficient is 0.0084, while the n value of concrete pipe is 0.014 and the n value of cast iron pipe is 0.013. Therefore, the FRP pipe can significantly reduce fluid pressure loss along the path and improve the conveying capacity.
What's more, it can bring significant economic advantages:
(1) If the conveying capacity is the same, the smaller diameter of FRP pipes can be selected for the project to reduce one-time project input.
(2) With the same inner diameter of the pipe, the pumping costs can be saved if FRP pipes are used. It also shortens the pumping time and reduces long-term operation costs.
6. Good electrical and thermal insulation. FRP is a non-conductor and the electrical insulation of the pipe is excellent. The insulation resistance is between 101 to-1015 Ωcm. The most suitable places are in the transmission, telecommunications lines concentrated areas and multi-minefields. The heat transfer coefficient of FRP is very small. It is only 0.23, which is 5 % of steel, and the heat preservation performance of steel pipes is excellent.
7. Good wear resistance. The water containing a large amount of mud, sand and gravel was loaded into the pipe to carry out a comparative test on the effect of rotational wear. After 300 million rotations, the wear depth of the inner wall of the pipe is as follows: the wear depth of steel pipes coated with tar and enamel is 0.53mm, and the wear depth of steel pipes coated with epoxy resin and tar is 0.52mm. This shows that it is quite wear-resistant.
8. Low maintenance cost. Because of the above corrosion resistance, wear resistance, frost resistance and pollution resistance, the project does not need to rust, pollution prevention, insulation, insulation and other measures and maintenance. There is no need for pole resistance protection for buried pipes, and the project maintenance cost can be saved by more than 70%.
9. Strong adaptability. FRP pipes can be customized based on users’ various specific requirements, such as different flows, different pressures, different buried depths and load conditions. The pipe can be designed and manufactured for different pressure grades and stiffness grades.
10. Long engineering life. Safety can be the best. According to the laboratory simulation test, the suitable life of FRP pipes can reach more than 50 years.
11. The comprehensive benefit of the project is good. The comprehensive benefit refers to the long-term benefit formed by various factors such as construction investment, installation and maintenance costs, service life, energy saving and steel saving. The combined benefit of FRP pipes is desirable. In particular, the larger the pipe diameter is, the lower the cost is. When it is further considered that the buried pipes can be used for several generations without annual maintenance, it can show its superior comprehensive advantages.
