many friends who are ready to install floor heating will ask: Can PE floor heating pipes be hot-melted? In fact, the answer is yes - the thermoplasticity of PE (polyethylene) material itself determines that it is very suitable for hot-melt connection. But hot-melt is not just "burning". There are many details that affect the effect. Today, I will break these things down.

First talk about why PE floor heating pipes can be hot-melted. PE is a typical thermoplastic resin. When the temperature reaches the melting point range of 190-240 ° C, the originally hard pipe will soften into a molten state. At this time, the ends of the two pipes are aligned and docked. After the temperature cools, the molten material will re-solidify to form a "whole interface" without gaps. This connection method does not have "splicing marks" like threads or ferrule, and can retain 100% of the original anti-corrosion and impermeability properties of PE pipes, which is also the core reason why hot melt has become the mainstream connection method of PE floor heating pipes.

Let's talk about the benefits of hot melt again - in fact, two words: "reliable". For example, the sealing performance, the hot melt interface has no "aging risk" of bonding, and there is no "loosening hazard" of the clamp. As long as the operation is standardized, the interface can last the same life as the pipe itself; for example, the cost, there is no need to buy additional fittings such as joints and card sleeves, which saves material money and reduces "failure points"; and compatibility, whether it is the same brand or different brands of PE pipes, as long as the specifications are consistent, the hot melt can be connected, and there is no need to be afraid of "mismatch of accessories".

But there are also many "pits" for hot melting, these points must be paid attention to: first, tools, you have to use a special PE pipe hot melt machine, the kind that can accurately control the temperature - don't use ordinary hot air guns instead, the temperature is high and low, either scorch the pipe or melt it unevenly; secondly, the temperature must be adjusted according to the wall thickness of the pipe, such as 20mm thin-walled PE pipe, the temperature is set at about 220 ° C. The thick pipe can be slightly higher, but it must not exceed 240 ° C. Then there are the operation steps, you have to cut the end of the pipe flat (burrs will cause the docking to be not tight), insert the die for the time to be accurate (for example, 20mm pipe is inserted for 10 seconds, 32mm pipe is inserted for 15 seconds), pull it out and connect quickly (don't wait for cooling before connecting), after docking Hold still, wait 30 seconds before letting go; finally, the environment, sub-zero temperature or rain and snow days do not melt hot, cold quickly will cause the interface "not soldered", humid environment will rust the die, affecting the melting effect.

There is also a small reminder: although the hot melt is simple, it is best not to try it yourself - the floor heating pipe is buried in the ground, once the interface leaks, the maintenance cost of prying the floor and plucking cement is much more expensive than finding a professional master. The professional construction team has experience and can adjust the parameters according to the wall thickness of the pipe and the ambient temperature, which is much more reliable than their own "feeling".

sum up: PE floor heating pipe can be hot-melted, and it is the most suitable connection method, but it must be "hot-melted". Master the three key points of tools, temperature and steps, and the hot-melt interface can make your floor heating use for twenty or thirty years without any problems. If you still have questions, find a knowledgeable friend or decoration master and ask a few questions, it is better than your own pondering.