Drawing weld mark properties

What Exactly Is A Plug Weld & What Is It Good For? plug or slot weld symbol Verified Answer and Explanation Explanation Reference: Moran, C Plug Weld symbols plug weld and slot weld Parentheses located above or below the weld symbol contain the number of plugs or slots The arrow-side and other-side designations indicate

plug slot weld ISO Symbols ; Backing run: back or backing weld USA, Fold joint ; Fillet weld, Backing strip ; Plug weld: plug or slot weld USA