Inspection - Mainline
- Allan J. Coleman Co.
- Aries Industries
- Central Oklahoma Winnelson
- Cherne Industries
- CPI Products / Cavallero Plastics
- CUES, Inc.
- EasyCAM
- Envirosight LLC
- EPL Solutions, Inc.
- Forbest Products Co.
- GapVax, Inc.
- GP Sewer LLC
- J.M. McKinney Co.
- JDC
- KEG Technologies, Inc.
- Minicam Inc.
- MyTana LLC
- Pearpoint (USA)
- Pow-r Mole Trenchless Solutions
- RapidView IBAK North America
- Ratech Electronics, Ltd.
- Rock Rental
- Source One Environmental
- Superior Signal Company LLC
- TROJAN WORLDWIDE INC.
- TruGrit Traction Inc.
- USA Borescopes
- Vivax-Metrotech Corp.
- WinCan
- Wohler USA Inc.