| 3D3 D Manufacturing, INC | Sand Springs | OK | — | ◇ UNVERIFIED |
| 3D3 D Manufacturing, INC | Sapulpa | OK | — | ◇ UNVERIFIED |
| HEHamilton Engineering Company INC. | Livonia | MI | — | ◇ UNVERIFIED |
| JVJ V Northwest INC | Canby | OR | — | ◇ UNVERIFIED |
| MFMetalcraft Fabrication INC | Portland | OR | — | ◇ UNVERIFIED |
| MFMj&h Fabrication INC. | Ponca City | OK | — | ◇ UNVERIFIED |
| ACAccu-fab & Construction, INC. | Moss Point | MS | — | ◇ UNVERIFIED |
| ATAccurate Tank and Vessels LLC | Midland | TX | — | ◇ UNVERIFIED |
| ACAcme Cryogenics | Allentown | PA | — | ◇ UNVERIFIED |
| ACAdvanced Cylinder & Tank LLC | Adel | GA | — | ◇ UNVERIFIED |
| AFAdvanced Fluid Containment | Hooper | UT | — | ◇ UNVERIFIED |
| ATAdvance Tank and Construction CO. | Wellington | CO | — | ◇ UNVERIFIED |
| AIAen Industries, INC. | Chicago Heights | IL | — | ◇ UNVERIFIED |
| APAir Products & Chemicals INC | Wilkes Barre | PA | — | ◇ UNVERIFIED |
| ATAlabama Tank, INC. | Atmore | AL | — | ◇ UNVERIFIED |
| AFAlcoa Fastening Systems | Stoughton | MA | — | ◇ UNVERIFIED |
| ATAlliance Tank Service LLC / Cushing Facility | Cushing | OK | — | ◇ UNVERIFIED |
| APAlloy Products CORP | Waukesha | WI | — | ◇ UNVERIFIED |
| ATAluminum Tank & Tank Accessories, INC. | Fort Worth | TX | — | ◇ UNVERIFIED |
| AWAmber Waves, INC. | Richardton | ND | — | ◇ UNVERIFIED |
| AWAmerican Welding and Tank | Bloomfield | IA | — | ◇ UNVERIFIED |
| AWAmerican Welding & Ta | Jesup | GA | — | ◇ UNVERIFIED |
| ALAmeri-fab, LLC | Weatherford | TX | — | ◇ UNVERIFIED |
| AAqueousvets | Jacksonville | FL | — | ◇ UNVERIFIED |
| AWArcosa Wind Towers INC | Clinton | IL | — | ◇ UNVERIFIED |
| AIArmor Industrial Fabricator | Baytown | TX | — | ◇ UNVERIFIED |
 B & B Manufacturing | Janesville | IA | — | ◇ UNVERIFIED |
| BSBegert Stainless, INC. | Marshfield | WI | — | ◇ UNVERIFIED |
| BSBelgrade Steel Tank CO INC | Belgrade | MN | — | ◇ UNVERIFIED |
| BBBison Bluff Services | Catoosa | OK | — | ◇ UNVERIFIED |
| BSBoyd Service, INC. | Catlettsburg | KY | — | ◇ UNVERIFIED |
| BTBrown-minneapolis Tank, INC. | Livingston | CA | — | ◇ UNVERIFIED |
| BMBrown Minneapolis Tank (prt/bmt) | Albuquerque | NM | — | ◇ UNVERIFIED |
| BRB R Services | Bakersfield | CA | — | ◇ UNVERIFIED |
| CTCaldwell Tanks | Louisville | KY | — | ◇ UNVERIFIED |
| CMCamcorp Manufacturing | Willow Springs | MO | — | ◇ UNVERIFIED |
| CSCapitol Steel Fabricatiors INC | Fontana | CA | — | ◇ UNVERIFIED |
| CTCardinal Tank (ctc) Cbt Boiler CORP (cbt) | New York | NY | — | ◇ UNVERIFIED |
| CCCemline CORP | Cheswick | PA | — | ◇ UNVERIFIED |
| CCCentral Connecticut Tank Fabrication & Truck Repair, LLC | Meriden | CT | — | ◇ UNVERIFIED |
| CIChart INC Richburg | Richburg | SC | — | ◇ UNVERIFIED |
| CSChart Storage Systems - Denver, INC | Denver | CO | — | ◇ UNVERIFIED |
| CFChem Fabrication LLC | Clute | TX | — | ◇ UNVERIFIED |
| CEC&J Endeavors, LLC | Rialto | CA | — | ◇ UNVERIFIED |
| CTClawson Tank CO | Clarkston | MI | — | ◇ UNVERIFIED |
 Cleveland Tank & Supply, INC. | Cleveland | OH | — | ◇ UNVERIFIED |
| CNC. Niel Welding, Inc. | Longview | TX | — | ◇ UNVERIFIED |
| CHColumbiana Hi Tech, LLC | Hollister | NC | — | ◇ UNVERIFIED |
| CHColumbiana Hi Tech, LLC | Greensboro | NC | — | ◇ UNVERIFIED |
| CTColumbian Tectank | Kansas City | KS | — | ◇ UNVERIFIED |
