Temperature control of ppr fuser.

The temperature of PPR hot melt welding is 253℃-274℃. If the temperature is lower than 253 ℃, the pipe, and the pipe fittings are only melted on a thin surface layer. Once they are welded, the strength of the welding will not be guaranteed, which is what we usually call the false welding phenomenon.

On the contrary, if the temperature is higher than 274℃, the surface molecules of the pipes and fittings will be damaged by the high temperature, so that the PP-R will form a thin liquid, and the inner diameter of the pipe will become smaller after connecting, and more importantly, the connecting part will be brittle cracking, Especially after the pipeline system is completed, the water pressurization often occurs.