The pipe assembly (1) has a pipe (2) and a pipe coupling (3), where the pipe coupling has a groove bottom (12) at an end (5) of a circumferential groove (6). A pipe is inserted into the groove bottom, where the pipe is welded with a pipe coupling. The groo...

The line element (1) has a housing (3) i.e. annular sleeve, radially surrounding a fluid line (2) in a fluid-tight manner. An annular space (4) is designed between the fluid line and the housing. The annular space is partially filled with compressible medi...