1. Baker Hughes A GE Company
2. CIRCOR Energy
3. ConocoPhillips
4. Dacon Inspection Services Co Ltd
5. Enduro Pipeline Services Inc.
6. IKM Gruppen AS
7. Inline Services
LLC
8. NDT Global Services Ltd
9. Onstream Pipeline Inspection Ltd.
10. Romstar Sdn. Bhd.
11. Rosen Group
12. Rouge Pipeline & Process Services
13. Royal Dutch Shell PLC
14. STATS Group
15. T.D. Williamson
Inc