GWUT represents a cutting-edge solution for efficiently screening long lengths of piping from a single inspection point. Employing a circumferential collar equipped with multiple transducers, GWUT enables the transmission of ultrasound in both directions along the pipe. This innovative approach ensures 100% coverage of the pipe wall without the need for insulation or coating removal, significantly expediting the inspection process. With its ability to swiftly detect areas of corrosion or erosion, GWUT serves as a vital preliminary screening tool, allowing for targeted and efficient follow-up inspections using other non-destructive testing (NDT) techniques, such as radiography or 3D structured light.