This study aims to conduct welding modeling on API 5L Gr B pipe material in order to analyze the residual stress that occurs when welding API 5L Gr B pipe material. To do this, two softwares are used, namely JMatPro and Abaqus 2017, JMatpro software is used to find several parameters. tests such as: Young's modulus, density, flow stress, thermal conductivity, expansion coeff, and specific heat …