The four primary types of welding processes are: Shielded Metal Arc Welding (SMAW) – "Stick Welding" Uses a consumable electrode coated in flux. Common in construction, repair, and fieldwork due to its simplicity and portability. Gas Metal Arc Welding (GMAW) – "MIG Welding" Uses a continuous wire electrode and shielding gas (e.g., argon or CO₂). Ideal for automotive, manufacturing,...