Pipe welding is a challenging but essential technique widely used in industries such as oil, gas and shipbuilding… Given its critical applications, the quality requirements for welds are more stringent than those for other welding techniques. MIG welding is known for its efficiency but it often encounters issues related to joint quality and durability, including defects like porosity and cracks due to incomplete metal crystallization in the gas shielded environment. A promising solution is the incorporation of ultrasonic vibration during the welding process which can improve solidification kinetics, promoting grain nucleation and refinement. To optimize this process, methods like the Box Behnken design offer a systematic approach to identifying the ideal combination of welding parameters. This article explores the application of the Box Behnken design method in analyzing tensile strength data for welds. The goal is to determine the optimal parameter values to enhance weld quality and structural integrity in pressure steel pipes using MIG welding with ultrasonic vibration. This approach holds the potential to advance welding technology and ensure the reliability of critical industrial components.