- Air Liquide
- Alcoa
- Ashland
- BBB Tank Services, LLC
- Bechtel Oil, Gas, & Chemicals
- BHP
- Bostco
- Buckeye
- Burns & McDonnell Engineering
- Calhoun Port Authority
- Chesapeake
- Coperion
- CTCI Americas
- Devon
- Dow
- Energy Transfer
- Enlink
- Entergy
- Enterprise Products
- Evergreen
- Formosa Plastics Corporation
- Frontier Industrial Corp
- G&W Engineers Inc
- GCA Nuclear Faciliity
- Genesis Energy
- Gulfmark
- Harvest Pipeline
- Ineos
- Inteplast Group
- Invista
- Jiuquan Iron and Steel Company
- Kinder Morgan
- KPEC
- Koch
- Magellan
- Marsden
- Nestle
- Neumin
- Northstar Midstream
- NuStar
- OXEA
- Petrojam Limited
- Phillips 66
- Pioneer
- Pipeline Operators of Texas
- Potent
- Praxair, Inc.
- Rusal
- Seadrift Coke L.P.
- S&B Engineering
- South Texas Project
- Spectra Energy
- Stolthhaven
- Targa Downstream, LLC
- Tenaris
- Texas Brine
- Transtex Hunter
- Tyson
- Unified Brine Pipeline
- Valero Refining-Texas, L. P.
- Valerus
- Voestalpine Texas, LLC
- Wison Petrochemicals
- WSP
