In this study, numerical simulation and experimental measurements were performed on a seam pipe weld metal to analyze the fracture behavior under working and residual stress conditions. The observed weld metal samples were produced using different welding techniques in order to ascertain the dissimilarities. The tensile properties and fracture toughness of the material were determined experimentally. The measurement of the residual stress in the weld metal was carried out using the incremental hole drilling method. The measurement results were used in numerical analysis. A combination of thermal and structural numerical analysis was used for the fracture stress intensity factor determination. The ANSYS Mechanical software was used to perform numerical simulations based on the finite element method. The basic level of the SINTAP method was used to analyze the structural integrity of seam pipe welds under the influence of primary and secondary stresses.