Abstract: Objective Against the background of the “dual-carbon” goals and energy structure transition, methanol, as an important clean energy source and energy carrier, has created new demands for safe and efficient storage and transportation systems with its large-scale application. The batch transportation of methanol through existing refined-product pipelines can make full use of existing pipeline network resources. However, owing to the differences in physical properties and transportation characteristics between methanol and conventional refined products, the process adaptability of existing pipelines for methanol transportation needs to be systematically verified through industrial tests. Methods Industrial tests of methanol batch transportation were conducted on an in-service refined-product pipeline. Comprehensive evaluations were carried out in terms of hydraulic operating safety, mixing-interface evolution, terminal reception control, product quality impacts, and adaptability of key equipment. Field operation monitoring, dynamic simulation, mixture testing, and equipment condition inspection were combined to investigate the operational response characteristics of methanol and refined products during batch transportation and to analyze the mixing behavior and process control requirements under different operating conditions. Results The results showed that the pipeline system operated stably throughout the industrial tests, and the existing process configuration was capable of meeting the requirements for methanol batch transportation. Methanol-oil mixing and terminal reception were generally controllable. Key equipment, including oil pumps, valves, and sealing components, operated normally and exhibited good adaptability to methanol transportation. No abnormal conditions, such as overpressure, underpressure, or leakage, occurred during the tests, thereby demonstrating the operational safety of the system. Conclusions The batch transportation of methanol through existing refined-product pipelines is technically and operationally feasible and can provide technical support for transforming conventional refined-product pipeline networks into multi-energy transportation platforms. Future studies should further incorporate long-term operational data, multi-product transportation conditions, and intelligent monitoring technologies to improve methanol pipeline transportation processes and operational control strategies, thereby promoting the efficient utilization of existing pipeline network resources and the upgrading of the energy transportation system.