Not the most detailed list of the Inspection & Testing Services in Idaho. The following list will however point you in the right direction. I do not guarantee that all numbers will work. I would recommend using Google as a great tool to find out more precise information on the Contractors listed below. Another important tidbit, not all companies listed below are Oil & Gas Contractors.
D & J's Pipe Pulling Service
2048 NW 9th Place, Meridian, ID
Northwest Tank & Welding
1914 Bentley Ave, Meridian, ID 83642
Pipeline Inspections Service
4423 E. Victory Road, Nampa, ID