GB/T 45377-2025 "Nondestructive Detection, Axial Long-distance Guided Wave Detection of Surface Pipelines and Plant Pipelines" is a national standard that will be implemented in 2025 and is suitable for long-distance rapid detection of surface pipelines in the fields of petroleum, chemical industry, and energy. The standard system specifies the technical requirements, equipment parameters, operation procedures, and result evaluation methods of guided wave detection, focusing on key technical indicators such as signal excitation methods, propagation characteristics analysis, defect identification and positioning. The standard innovatively introduces a multi-modal guided wave joint analysis method to optimize the detection sensitivity and Reliability evaluation system under complex working conditions, and adds modern detection requirements such as digitalization signal processing and environment interference suppression. This standard provides an efficient long-distance detection technology specification for industrial pipeline security evaluation, which is of great value to realize the rapid screening and accurate positioning of pipeline corrosion, crazing and other defects, and will promote the development of pipeline detection technology in our country towards intelligence and high efficiency.