During the implementation of engineering projects, pipeline welding construction accounts for more than 50% of the total installation workload of the plant, and the quality of pipeline construction directly affects the safe operation of the entire plant. Pipelines are assembled by welding multiple pipe segments together, and the construction process is complex, involving a wide variety of pipeline materials, extensive work areas, numerous participating parties, long construction periods, and large amounts of documentation. The management of welds and the compilation of documentation have always been the pain points and challenges in project construction. To standardize the pipeline welding workflow, achieve the full-process control of construction process and data information transparency, enhance lean and standardized construction management, and reduce the repetitive work on construction sites, this project innovatively constructed and applied a 4D pipeline lean construction management system during construction, which realized dual application on both PC and mobile APP platforms. By using information technology to solve the problems in traditional construction, the precision of process pipeline welding management was improved while reducing management complexity.