Robert L. Norris

T.D. Williamson, Inc. provides pipeline equipment and services. The firm designs, manufactures, and maintains oil field machinery and systems including pipeline pigging, gas leak detection, pipeline inspection, plugging, tapping, valve, clamp, and catholic protection equipment. It offers general pipeline, training, and turnkey services. The company was founded by Robert D. McGrew in 1920 and is headquartered in Tulsa, OK.

Inline Services LLC is a company based in Tomball, TX. Inline Services is a leading manufacturer of pigging and liquid product used to ensure optimal fluid and gas flow rates in offshore platforms. Offshore platforms are structures used to extract crude oil and natural gas from beneath the ocean floor, and Inline Services' products help prevent hindrances to pipeline performance caused by the collection of hydrocarbons on the walls. The company was founded in 1991 and Phillip Morrison has been the CEO of the company since 2019.

Seam Group LLC engages in the provision of electrical and workplace training and safety services. It offers includes electrical safety training, on-site and online training, training class evaluation, basic industrial electricity, three phase motor basics, hands-on electrical troubleshooting, high voltage safty, and infrared thermography training. The company was founded by Daryn R. Lewellyn in 1993 and is headquartered in Indianapolis, IN.