- AES Deepwater
- Agrifos
- Air Products
- Alcoa
- All Pump & Equipment
- Atmos Energy
- Basell
- BASF
- Best Pumpworks
- British Petroleum
- Cameron
- Catepillar
- Chevron
- City of Austin
- City of Houston
- Compressor Systems Inc.
- ConocoPhillips
- Cook - MFS
- CPS Energy
- Dow Chemical
- Dresser Rand
- DuPont
- Elliot Turbo
- Enbridge Pipeline
- Equistar Chemicals
- Exterran
- ExxonMobil Corp.
- FES Systems
- Fluor Enterprises
- Formosa Plastics
- Freeport LNG
- Gaffney-Kroese
- General Electric
- Georgia Pacific
- Golden Pass LNG
- Goodyear Rubber
- Gulbrandsen
- Gulf Chemical
- Huntsman
- Invista
- Kewitt Offshore
- Koch Pipeline
- Louisiana Pacific
- Lower Colorado River Authority
- Lubrizol
- Lufkin Industries
- Luminant Power
- LyondellBasell
- Magellan Midstream
- MeadWestVaco
- MEMC
- Motion Industries
- National Oilwell Varco
- New Braunfels Utility
- NRG Energy
- Pasadena Refining
- Praxair
- San Antonio Water Systems
- Shell
- Siemens
- Solar Turbines
- South Texas Nuclear Project
- Spectra Energy
- Standard Equipment Company
- Sulzer
- Sunoco
- Targa Resources
- Temple Inland
- Texas A&M University
- Texas Tech University
- Tinker Airforce Base
- Universal Plant Service
- Valero Energy Corp.
- Wartsilla
- Weatherford
- Wood Group Field Services
- Zachry Construction