When the required length of fillet weld cannot be achieved

A slot weld is basically an elongated plug weld Instead of a simple hole , a slot is formed in the top surface This slot can either

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 The suggestions I did find were changing the pulse profile , using a larger hole and using a slot instead of a hole; I

plug weld vs slot weld How to calculate the shear stresses in bevelled slot welds connecting two plates References: “Steel Design for Engineers and Architects”, 1992: