Creating Custom Isometric Symbols in AutoCAD Plant 3D - Piping Content
Plant 3D looks inside the IsoSymbolMap.txt file of your project style. It matches the SKEY to a specific 2D AutoCAD block stored in the IsoSymbolStyles.dwg template. Standard AutoCAD Plant 3D SKEY Reference autocad plant 3d iso symbol skey
The first two letters of an SKEY typically indicate the component family, while the last two provide specific details. For example: Creating Custom Isometric Symbols in AutoCAD Plant 3D