2022-06-30
The difference between PE water supply pipes and PE drainage pipes
1. Pressure PE water supply pipes are used to deliver tap water, typically requiring water to be pumped from underground to the surface and into residential homes. Since PE water supply pipes must withstand pumping pressure, water supply pipes are generally classified into five pressure levels: 0.6 MPa, 0.8 MPa, 1.0 MPa, 1.25 MPa, and 1.6 MPa—corresponding to pressure ratings of 6 kg/cm², 8 kg/cm², 10 kg/cm², 12.5 kg/cm², and 16 kg/cm², respectively. The higher the pumping pressure, the higher the required pressure rating for the PE water supply pipe. Polyethylene drainage pipes are generally used to discharge wastewater and flow from top to bottom; therefore, polyethylene drainage pipes typically do not need to consider pressure ratings.
2022-06-30
Things to Note During PE Drainage Pipe Installation
1. Before using and installing pipes: Carefully inspect the pipes for any damage incurred during loading, unloading, transportation, and stacking. If any defective pipes are found—such as cracks, breaks, or deformations—remove them promptly. 2. Connection between inspection wells and pipelines: It is recommended to use flexible joints sealed with flexible packing materials; the specific construction details should follow the design requirements. 3. When excavating trenches and preparing foundations, pay attention to the following: (1) The clear width at the bottom of the trench should be determined by adding 0.6 meters to the outer diameter of the pipe; (2) During trench excavation, adequate drainage measures must be implemented to prevent the trench bottom from being soaked by water.
2018-10-15
Before using PE pipes, sufficient preparation should be carried out.
PE pipe and fittings are widely used in the construction industry due to their excellent advantages. However, before using PE pipes and fittings, it is essential to make thorough preparations to avoid any problems later on. Before installing PE pipes and fittings, it is necessary to excavate trenches. The excavated soil must be stored in a designated, reasonably organized area that is at least two meters away from the trench itself. The excavated earth should be promptly transported out of the site to prevent interference with subsequent work. During the installation of PE pipes and fittings, mechanical equipment must be used; the excavation depth should be controlled so that the bottom of the trench remains at least 20 centimeters above the designed elevation.
2018-10-15
How to Conduct a Water-Tightness Test on PE Pipe and Fittings
PE pipes and fittings can be used in water supply pipelines. In addition, there are also UPVC pipes, steel pipes, gray cast iron pipes, glass-fiber reinforced plastic sand-casing pipes, and ductile iron pipes, among others. For the hydrostatic test of PE pipes and fittings, the test pressure shall not exceed the pipe’s pressure rating or 1.5 times the lowest pressure rating of any component in the system. Once the pipeline pressure reaches the test pressure, it should be held for a specified period to allow the temperature of the test medium inside the pipe to equilibrate with the ambient temperature of the pipeline. After both the temperature and pressure have stabilized, timing can begin. Under normal circumstances, the hydrostatic test should be maintained at the test pressure for 24 hours. At the end of the test, if no obvious leakage or pressure drop is observed, then...
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