接头（1），用于连接水管，优选塑料管，包括至少一个伸缩管（2）和一个可伸缩的电焊套筒（3）与至少一个加热线圈（4），其中，所述伸缩管（2）焊接到伸缩电焊套筒（3）之前 可滑动地设置在伸缩电焊套筒（3）和固定地焊接到焊接至伸缩电焊套筒（3），其中，所述前端（5，6）的嵌合的（1），其为对接焊连接端（9），用于对接与焊接 要被连接的管端（13）形成。

Fitting (1) for connecting pipes preferably plastic pipes comprising at least one telescopic tube (2) and a telescopic electric welding sleeve (3) with at least one heating coil (4), wherein the telescopic tube (2) prior to welding to the telescopic electric welding sleeve (3) slidably disposed in the telescopic electric welding sleeve (3) and is welded firmly to the welding with the telescopic electric welding sleeve (3), wherein the front ends (5, 6) of the fitting (1) as butt welding connection ends (9) for butt welding with the to be connected pipe ends (13) are formed.