| 摘要 |
<p>The welding socket (1) has a cylindrical body (4) in which a resistance heating wire (3) is inserted. A cylindrical recess (5), into which a pipe end (8) is pushed, is worked into one end side (22) of the socket (1). A spacer (20) keeps free an annular space (25) between the end surface (7) and an opposite surface (21) of the recess (5). During the welding process, a material flow takes place in which a region (9) of the socket body (4) flows into the annular space (25). After welding, the end surface (7) of the pipe (8) is completely sealed and cannot be attacked by a corrosive medium. <IMAGE></p> |
