South Pars SPD17B, SPD14A & B and SPD18B phase platforms were located in Mobin Sazeh Gostar Persian Gulf Company located in Hormozgan province. Lian Offshore Innovators Company was responsible for the construction and pre-commissioning of the piping lines of these platforms. In the piping section, more than 100,000 inches of pipeline has been built and line check, test and reinstatement operations have been performed on these lines on these platforms. The management and engineering of this project has been done with trust and reliance on the Iranian youth, and the result of this trust is the completion of this project in the shortest time with the best quality. All these operations have been completed without any incident.