Smooth carat tube with inner wall, small drainage resistance

In municipal drainage and rain and sewage diversion projects, the hydraulic characteristics of the pipeline directly determine the operating efficiency of the system. Carat pipe, that is, high-density polyethylene structural wall hot winding pipe, is becoming the preferred solution to reduce the flow resistance due to its unique smooth structure of the inner wall. During the forming process of this pipeline, the inner layer is continuously extruded and calendered, and the surface is extremely flat and smooth, and the Manning roughness coefficient can be as low as about 0.009. Compared with traditional concrete pipes or bellows, the disturbance of the water flow boundary layer is greatly reduced, and the water head loss along the way is significantly reduced. Under the same slope and pipe diameter conditions, the smooth inner wall can bring higher flow rate and flow capacity, effectively reduce the risk of siltation and reduce the frequency of daily maintenance. At the same time, the polyethylene material itself has hydrophobicity and wear resistance, and it is not easy to scale during long-term operation, so the smoothness advantage of the inner wall can be maintained for a long time. At the pipe connection, the socket electric fusion or throttle socket is used to seal, the interface transition is smooth, and there is no wrong table to block water, which further guarantees the overall hydraulic efficiency of the drainage system. For projects that require strict control of burial depth and pumping station energy consumption, low resistance means that smaller diameters or reduced gradients can be selected, and the comprehensive cost and long-term operating costs can be optimized. In practical applications, the inner wall smooth carat pipe performs well in gravity flow drainage pipe network, rainwater collection and transportation, and sewage treatment plant inlet pipe section. The stable output of its hydraulic performance provides a reliable guarantee for urban water environment management. Choosing a smooth carat tube with an inner wall is to reduce the drainage flow resistance from the source and build a more efficient and durable underground drainage vein.