Can PE pipes and pipes with different wall thicknesses be directly hot-melt connected?

In the construction and installation of PE pipes, hot melt docking is a common connection method. But many construction personnel have doubts: can PE pipes and pipes with different wall thicknesses be directly hot melt docking? The answer is no, rashly operating may bury serious safety hazards.

the principle of hot melt docking is to heat the pipe connection part to the molten state through the hot plate, then quickly remove the hot plate, make the two molten end faces fit under a certain pressure, and realize a firm connection after cooling. Seemingly simple operation, but it actually has strict requirements on pipe conditions. When the PE pipe and the pipe of different wall thicknesses are hot-melt docking, although the heating temperature of the hot plate is the same, due to the different cross-sectional areas of the hot-melt zone of the pipe, many problems will occur when the same welding pressure is applied.

the area of the hot-melt zone of the thinner pipe is small, under the same pressure, the pressure per unit area is large, which can easily lead to excessive melting, and even the deformation and perforation of the pipe; while the area of the thicker pipe hot-melt zone is large, and the pressure per unit area is relatively small, which may not be fully melted, resulting in a gap at the interface. Neither of these two situations can guarantee the bonding effect between the two, which in turn seriously affects the quality of the docking, greatly reduces the strength and sealing of the connection, and is prone to water leakage and air leakage in later use, which brings great safety risks to the project.

Therefore, from a professional point of view, PE pipes with different wall thicknesses should not be hot-melted with each other. During construction, PE pipes with the same wall thickness should be selected for hot-melt docking as much as possible to ensure the reliability and stability of the connection.

Among many PE pipe manufacturers, the PE pipes produced by the AD pipe manufacturers are trusted by their rigorous craftsmanship and professional technology. During the production process of the AD pipe, various parameters such as the wall thickness of the pipe are strictly controlled, and each batch of pipes is guaranteed to have uniform specifications and stable quality. At the same time, AD Pipeline also provides professional construction guidance for customers, from pipe selection to hot melt docking operation, there are detailed specifications and suggestions to help construction personnel avoid quality problems caused by improper operation and ensure the smooth progress of the project.

Therefore, in order to ensure the quality of the project and the safety of use, in the hot melt docking construction of PE pipes, it is necessary to avoid the direct hot melt docking of pipes with different wall thicknesses. It is wise to choose products with reliable quality and professional service like AD PE pipes.