Pipeline structures are the most convenient and fastest means of transport and supply of fuels and fluids in general. Therefore, their correct and continuous functioning is of vital economic and social importance. Nowadays, the most widely used Pipeline Integrity Management techniques involve fairly invasive monitoring methods as resorting to Pipeline Inspection Gauge devices. The need to temporarily stop the lines and non-targeted inspections define the poor efficiency of the current monitoring techniques of Steel Pipelines which require the research of new investigation methods. Looking at these premises, a Structural Health Monitoring approach for Damage Identification would seem the most suitable to fulfil the task of studying the health status of Pipelines, such as the Vibration Based Investigation which is one of the common methods used in the field of civil engineering monitoring.