PTIS - Provide a wide range of quality inspection services, non-destructive testing services, ndt technician, calibration services and instrument calibration to our client in the energy sector. Premier Tubular Inspection Services has been the hallmark of high-quality non-destructive testing within the Energy sector. Started thirty years ago, PTIS has become the industry leader across regions. With its team of highly-trained and committed inspectors, PTIS is known in the industry for being pioneers in technology application.