Issue:

Your isos need to show different styles of welds

Solution:

You will need to modify the BOM Item Type for the weld. Below are the different options

Fabrication

17PP_WeldType-Fab.png        17PP_WeldType-Fab-iso.png

Erection

17PP_WeldType-Erec.png        17PP_WeldType-Erec-iso.png

Offshore

17PP_WeldType-Off.png        17PP_WeldType-Off-iso.png

Misc

17PP_WeldType-Misc.png        17PP_WeldType-Misc-iso.png

Versions: 

CADWorx Plant Professional 2005, CADWorx Plant Professional 2006, CADWorx Plant Professional 2007, CADWorx Plant Professional 2008, CADWorx Plant Professional 2009, CADWorx Plant Professional 2010, CADWorx Plant Professional 2012, CADWorx Plant Professional 2013, CADWorx Plant Professional 2014, CADWorx Plant Professional 2015, CADWorx Plant Professional 2016, CADWorx Plant Professional 2017