| ALAmeri-fab, LLC | Weatherford | TX | — | ◇ UNVERIFIED |
| AIArmor Industrial Fabricator | Baytown | TX | — | ◇ UNVERIFIED |
 B & B Manufacturing | Janesville | IA | — | ◇ UNVERIFIED |
| BSBegert Stainless, INC. | Marshfield | WI | — | ◇ 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 |
| CCCentral Connecticut Tank Fabrication & Truck Repair, LLC | Meriden | CT | — | ◇ UNVERIFIED |
| CIChart INC Richburg | Richburg | SC | — | ◇ UNVERIFIED |
| CFChem Fabrication LLC | Clute | TX | — | ◇ UNVERIFIED |
| CEC&J Endeavors, LLC | Rialto | CA | — | ◇ 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 |
| CBCooper Bearings, INC. | Georgetown | DE | — | ◇ UNVERIFIED |
| CCCorrosion Control CORP | Pedricktown | NJ | — | ◇ UNVERIFIED |
| CCCorrosion Control CORP. | Pedricktown | NJ | — | ◇ UNVERIFIED |
| CCCrosno Construction INC | Oak Harbor | WA | — | ◇ UNVERIFIED |
| CSCryogenic Systems Equipment, INC. | Blue Island | IL | — | ◇ UNVERIFIED |
| CVCryogenic Vessel Alternatives INC. | Baytown | TX | — | ◇ UNVERIFIED |
| CICst Industries INC | Syracuse | UT | — | ◇ UNVERIFIED |
| CMCustom Metalcraft, INC. | Springfield | MO | — | ◇ UNVERIFIED |
| DEDavidson Enterprises INC | Bakersfield | CA | — | ◇ UNVERIFIED |
| DBD B Western INC | North Bend | OR | — | ◇ UNVERIFIED |
| DLDeerebuilt, LLC | Ardmore | OK | — | ◇ UNVERIFIED |
| DMDelta Mechanical, INC. | Berwick | PA | — | ◇ UNVERIFIED |
| DLDenec, LLC | Huntsville | AL | — | ◇ UNVERIFIED |
| DMDerson Manufacturing INC | Minnetrista | MN | — | ◇ UNVERIFIED |
| DTDirect Tank Services | Lone Star | TX | — | ◇ UNVERIFIED |
| DEDiverse Energy Systems, LLC | Grafton | ND | — | ◇ UNVERIFIED |
| DIDixie Industrial, LLC | Jacksonville | FL | — | ◇ UNVERIFIED |
| DWDixie Weld-fab, INC. | Belcher | LA | — | ◇ UNVERIFIED |
| DTDouble T Industries INC | Rolla | KS | — | ◇ UNVERIFIED |
| DPDragon Products Center | Center | TX | — | ◇ UNVERIFIED |
| DPDragon Products, LLC | Silsbee | TX | — | ◇ UNVERIFIED |
| DPDragon Products, LTD | Center | TX | — | ◇ UNVERIFIED |
| DTD&r Tank | Pecos | NM | — | ◇ UNVERIFIED |
| DGDungeness Gear Works | Arlington | WA | — | ◇ UNVERIFIED |
| DCDutton-lainson Company | Hastings | NE | — | ◇ UNVERIFIED |
| EEEconomical Energy Consultant, Incorporated | Harrisonville | PA | — | ◇ UNVERIFIED |
| EIEica Industries, INC. | Fort Worth | TX | — | ◇ UNVERIFIED |
| ESEidson Steel Products, INC. | Albuquerque, Nm | CO | — | ◇ UNVERIFIED |
| EEEisenback Equipment Sales INC | Camden | SC | — | ◇ UNVERIFIED |
| EIEnertech Industries, INC. | Odessa | TX | — | ◇ UNVERIFIED |
| EMEureka Manufacturing | Eureka | SD | — | ◇ UNVERIFIED |
| FIFlexcon Industries | Randolph | MA | — | ◇ UNVERIFIED |
| FMFlorida Marine Tanks, INC | Henderson | NC | — | ◇ UNVERIFIED |
| FKFort Knox Mailbox LLC | Grants Pass | OR | — | ◇ UNVERIFIED |
| GAG an D Petroleum, LLC | Janesville | WI | — | ◇ UNVERIFIED |
| GCGardner Cryogenics | Allentown | PA | — | ◇ UNVERIFIED |
| GWGarland Welding | Lowellville | OH | — | ◇ UNVERIFIED |
| GHGe Hitachi Nuclear Energy - Canonsburg | Canonsburg | PA | — | ◇ UNVERIFIED |
| GKGlass King Mfg. Co., INC. | Great Bend | KS | — | ◇ UNVERIFIED |
 Great Basin Industrial, LLC | Tonopah | NV | — | ◇ UNVERIFIED |
| HEHamilton Equipment Company | Knoxville | TN | — | ◇ UNVERIFIED |
| HSHills Stainless Steel and Equipment CO | Luverne | MN | — | ◇ UNVERIFIED |
| HPHouston Process and Design | Houston | TX | — | ◇ UNVERIFIED |
| HPHouston Process and Design | Houston | TX | — | ◇ UNVERIFIED |
| HGHp Gas Products | Baytown | TX | — | ◇ UNVERIFIED |
| IRIndustrial Refractory Services, INC. | Fort Worth | TX | — | ◇ UNVERIFIED |
| ISIndustrial Steel Manufacturing LLC | Arecibo | PR | — | ◇ UNVERIFIED |
| ISIowa Steel Fabrication, LLC. | Osceola | IA | — | ◇ UNVERIFIED |
| ILIron Lot LLC | Gadsden | AZ | — | ◇ UNVERIFIED |
| IPIsland Park Fabrication Plant | Beaumont | TX | — | ◇ UNVERIFIED |
| JMJfp Multiservices, INC | Miami | FL | — | ◇ UNVERIFIED |
| JTJudson Tank Company | Mankato | MN | — | ◇ UNVERIFIED |
| KIKbk Industries LLC South Facility | Rush Center | KS | — | ◇ UNVERIFIED |
| KIKeeVac Industries | Denver | CO | — | ◇ UNVERIFIED |
| KHKeith Huber Corporation | Gulfport | MS | — | ◇ UNVERIFIED |
 Kennedy Tank & Manufacturing Company, Inc, | Champaign | IL | — | ◇ UNVERIFIED |
| KFKmi Fabricators, INC. | Mineral Wells | TX | — | ◇ UNVERIFIED |
| LILaBreck Industries, LLC | Hayden | ID | — | ◇ UNVERIFIED |
| LELouisville Exchanger - Vessel INC | Okolona | KY | — | ◇ UNVERIFIED |
| MPMacota Properties, LLC | Conroe | TX | — | ◇ UNVERIFIED |
| MJMaguire Jones Boys II, LLC | Sioux Falls | SD | — | ◇ UNVERIFIED |
| MTMaguire Tank, Inc. | Sioux Falls | SD | — | ◇ UNVERIFIED |
| MCManufacturing Consulting Services | Sulphur Springs | TX | — | ◇ UNVERIFIED |
| MDMarks Design & Metalworks | Vancouver | WA | — | ◇ UNVERIFIED |
| MLMckc, LLC | Sandwich | IL | — | ◇ UNVERIFIED |
| MFMetalcraft Fabrication INC | Portland | OR | — | ◇ UNVERIFIED |
| MTMichael T. Power | Atascadero | CA | — | ◇ UNVERIFIED |
| MWMidland West Manufacturing | Billings | MT | — | ◇ UNVERIFIED |
| MCMiratech Corporation | Prior Lake | MN | — | ◇ UNVERIFIED |
| MTMmi Tank and Industrial Services, INC. | Cheyenne | WY | — | ◇ UNVERIFIED |
| MTMmi Tank & Industrial Services, INC. | Avondale | AZ | — | ◇ UNVERIFIED |
| MMM & M Welding & Fabricating, INC. | Slippery Rock | PA | — | ◇ UNVERIFIED |
| MTMontgomery Tank of Louisiana INC | Montgomery | LA | — | ◇ UNVERIFIED |
| MFMoon Fabricating Corporation | Kokomo | IN | — | ◇ UNVERIFIED |
| MBMosier Brothers | Woodlake | CA | — | ◇ UNVERIFIED |
| MMMpv Morganton Pressure Vessels, LLC | Bay Minette | AL | — | ◇ UNVERIFIED |
| MMMpv Morganton Pressure Vessels North Carolina, LLC | Bay Minette | AL | — | ◇ UNVERIFIED |
| NSNorthland Stainless INC | Tomahawk | WI | — | ◇ UNVERIFIED |
| OSOak Street Tank & Steel INC | Ashland | OR | — | ◇ UNVERIFIED |
| OLOhmstede LTD - Ohmstede LTD St Gabriel Plant | Saint Gabriel | LA | — | ◇ UNVERIFIED |
