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Thick-walled Spiral Pipe Steel Grades
Sources: this site Click: Date: 2016-2-25 21:47:26
In the pipeline line pressure ratio also decreased gradually. For the diameter, pressure, pressure ratio required to optimize the calculation, comparison and selection. When determining the amount of input, determine the diameter, pressure, pressure ratio by optimizing the future, such as selecting a higher pressure steel strength grade is too low, it will cause excessive wall thickness, which gives the pipe, site welding and transportation links with many other be difficult, or even difficult to achieve.
Now more choice of fluid pipes thick-walled spiral pipe, pipeline delivery pressure medium is gradually increased in recent years, especially in the gas pipeline online. This is because in a certain range to improve the delivery pressure will increase economic efficiency, to pipe gas pipeline, for example, in the same amount of input conditions, increases the density of the gas delivery pressure and increase the flow rate is reduced, so that the friction resistance decreased.
Production needs to promote the improvement of the steel grade. The so-called pressure ratio refers to the ratio of inbound and outbound pressure pressure, the pressure ratio across the board reduction means are operating at a higher pressure, so that power consumption can also be reduced. Early pressure is more than 1.6, and later fell to 1.4 in recent years, some foreign gas pipeline to take pressure ratio was 1.25. Of course, the pressure ratio decreases, the number of compressor stations to increase, so that investment will increase.
Now more choice of fluid pipes thick-walled spiral pipe, pipeline delivery pressure medium is gradually increased in recent years, especially in the gas pipeline online. This is because in a certain range to improve the delivery pressure will increase economic efficiency, to pipe gas pipeline, for example, in the same amount of input conditions, increases the density of the gas delivery pressure and increase the flow rate is reduced, so that the friction resistance decreased.
Production needs to promote the improvement of the steel grade. The so-called pressure ratio refers to the ratio of inbound and outbound pressure pressure, the pressure ratio across the board reduction means are operating at a higher pressure, so that power consumption can also be reduced. Early pressure is more than 1.6, and later fell to 1.4 in recent years, some foreign gas pipeline to take pressure ratio was 1.25. Of course, the pressure ratio decreases, the number of compressor stations to increase, so that investment will increase.
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