The Connection Method Of Hdpe Drain Pipe Is As Follows:

HDPE drainage pipes are generally connected by hot melt. The main process is adjustment, heating, switching, joint pressure and cooling. The hot melt connection method of PE drainage pipes is to heat two identical connection interfaces with hot plates to a viscous flow state. , Remove the hot plate, and then apply a certain pressure to the connection interface, and cool and solidify under this pressure state to form a firm connection. The materials in the viscous flow state at the interface flow and diffuse during the butt joint. Too much flow is not conducive to diffusion and entanglement. Therefore, the flow must be restricted to a certain range to achieve "post-melting welding" in the limited flow. The key to the process is to adjust the three parameters of temperature, time, and pressure during the docking process, and to consider factors such as the performance of the interface material, the stress status, the geometric shape, and the environmental conditions.

HDPE drainage pipe performance characteristics:

1. High strength, can withstand strong pressure and impact;

2. The inner wall is smooth, the friction and resistance to the fluid are small, and the nozzle is not easy to be blocked, which is conducive to the flow of water and has good drainage performance;

3. Corrosion resistant, not corroded by chemicals and corrosive substances contained in waste water and sewage;

4. Good wear resistance, comparable to cement pipes and steel pipes, and can be used for a long time;

5. Special connection method, the joint will not have leakage problems, and the connection is convenient;

6. The price is cheap and the quality is light, which is conducive to transportation and construction, improves construction efficiency, and reduces engineering costs.

HDPE is a good pipeline. It should not only have good economic efficiency, but also have a series of advantages such as stable and reliable interface, anti-impact, anti-cracking, anti-aging, and corrosion resistance. Compared with traditional pipes, HDPE piping system has The following series of advantages:

1. Reliable connection: the polyethylene pipe system is connected by electric heating, and the strength of the joint is higher than the strength of the pipe body;

2. Good low-temperature impact resistance: The low-temperature embrittlement temperature of polyethylene is extremely low, and it can be used safely in the temperature range of -60-60℃. During construction in winter, because the material has good impact resistance, the pipe will not be brittle;

3. Good resistance to stress cracking: HDPE has low notch sensitivity, high shear strength and excellent scratch resistance, and its resistance to environmental stress cracking is also very outstanding;

4. Good chemical corrosion resistance: HDPE pipelines can withstand the corrosion of a variety of chemical media, and the chemical substances in the soil will not cause any degradation to the pipeline. Polyethylene is an electrical insulator, so it will not rot, rust or electrochemical corrosion; in addition, it will not promote algae or growth.