The connection methods of HDPE drainage pipes are as follows: HDPE drainage pipes are generally connected by hot melt, and the main process is adjustment, heating, switching, joint pressurization and cooling. After the plate is heated to a viscous flow state, remove the hot plate, apply a certain pressure to the connection interface, and cool and solidify under this pressure state to form a firm connection. The material in the viscous flow state on the interface during butt joints flows and diffuses. If the flow is too large, it is not conducive to diffusion and entanglement. Therefore, the flow should be limited to a certain range to achieve "post-melt welding" in a 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 connection interface material, stress state, geometry, and environmental conditions.
