Guided wave technology is a nondestructive testing method used to locate potential degradation, such as internal or external corrosion and metal loss. While conventional UT provides localized inspection, underneath or in the vicinity of the sensor location, guided waves are able to screen the entire pipe wall, over tens of meters, from a single inspection position. Then, prove-up inspection only needs to be conducted at the specific indication position. Combined with other NOT techniques, a guided wave system will help to maximize the efficiency of a corrosion management program, without compromising data quality.