A Guide to Weld Symbols in the UK

A Guide to Weld Symbols in the UK plug or slot weld symbol strength for certain welds Groove weld size Root opening; depth of filling for plug and slot welds Finish symbol Contour symbol Reference line Elements in plug and slot welds Finish symbol Contour symbol Root opening; depth of filling for plug and slot welds Effective groove weld size Depth or preparation; size or strength for

plug and slot welds A plug weld joins the surface of a piece of material to another piece through a hole The hole can be partially or completely filled with the weld material

plug slot weld The number of plugs or slots is given in parentheses above or below the weld symbol The arrow-side and other-side designations indicate which piece contains The Lap-Joint can be welded with the bevel groove, J-groove, fillet, slot, plug, spot, projection and seam SYMBOL DIMENSION APPLICATION GUIDE Fillet Weld