A weld line is created as an AutoCAD polyline with the corresponding weld data.
Weld lines establish a connection between objects (e.g. beams and plates). These objects contain not only the weld properties but also the logical connection between the connected structural parts.
Weld lines are inserted in the model as individual elements and are represented as thick polylines.

Access the command
In the Objects tab
Connection objects panel, click
(Line of weld).
Command line: _AstM4WeldSeam STRAIGHT
Connection objects panel, click
(Line of weld).
The properties dialog box appears where you can define the weld information.