5 Plug and Slot Welds

Neither the plug weld symbol nor the slot weld symbol may be used to designate fillet welds in holes Plug or Slot Weld Diagram Plug or Slot

The only difference is that a plug weld's shape is defined by a diameter, and a slot weld's shape is defined by a diameter and a length 1

plug or slot weld My question is, would I be able to plug weld or slot weld the 78 tube in with a stickarc welder? Reason I ask, is that I have only ever

plug and slot weld symbol Double-U butt weld Flat single-V butt weld with flat backing run Fillet weld Convex double-v weld Plug weld