| GCGulf Coast Alloy Welding, INC. | Humble | TX | — | ◇ UNVERIFIED |
| GCGulf Coast Marine Fabricators INC | Abbeville | LA | — | ◇ UNVERIFIED |
| GCGulf Coast Metal Work INC | Cape Coral | FL | — | ◇ UNVERIFIED |
| GIGulf Island Services LLC | Houma | LA | — | ◇ UNVERIFIED |
| GMGulf Marine Fabricators, L.p. | Ingleside | TX | — | ◇ UNVERIFIED |
| GSGulf States Fabrication INC. | Laurel | MS | — | ◇ UNVERIFIED |
| GWG W Heineke CO INC | El Centro | CA | — | ◇ UNVERIFIED |
| HIHaala Industries INC | Sleepy Eye | MN | — | ◇ UNVERIFIED |
| HSHaberle Steel INC. | Delano | PA | — | ◇ UNVERIFIED |
| HFH.a. Fabricators , INC. | North Logan | UT | — | ◇ UNVERIFIED |
| HFHaines Fabrication & Machine, LLC | Selbyville | DE | — | ◇ UNVERIFIED |
| HUHalfen Usa, INC. | Converse | TX | — | ◇ UNVERIFIED |
| HMHallwood Modular Buildings LLC | Shreveport | LA | — | ◇ UNVERIFIED |
| HSHambric Steel & Fabrication | Albany | GA | — | ◇ UNVERIFIED |
 Hamilton Iron Works INC. | Woodbridge | VA | — | ◇ UNVERIFIED |
| Hamilton Iron Works, INC. | Torrance | CA | — | ◇ UNVERIFIED |
| HHHandcrafted Hose Company | Denton | TX | — | ◇ UNVERIFIED |
| HIHansford Industries, INC. | Sacramento | CA | — | ◇ UNVERIFIED |
| HEHarbor Enterprises LLC. | Thomasville | GA | — | ◇ UNVERIFIED |
| HOHarbor Ornamental, INC. | Torrance | CA | — | ◇ UNVERIFIED |
| HMHarco Metal Products, INC. | Valley Head | AL | — | ◇ UNVERIFIED |
 Hardric Laboratories | Chelmsford | MA | — | ◇ UNVERIFIED |
| Hardric Laboratories | Waltham | MA | — | ◇ UNVERIFIED |
| HWHard Way Enterprises, Inc. | Colorado Springs | CO | — | ◇ UNVERIFIED |
| HRHarmac Rebar & Steel CORP | Fryeburg | ME | — | ◇ UNVERIFIED |
| HIHarmon's Ironworks and Fabrication LLC | Bowdon | GA | — | ◇ UNVERIFIED |
| HRHarris/arizona Rebar INC. (dba Harris Rebar Southern California) | Pomona | CA | — | ◇ UNVERIFIED |
| HRHarris Rebar Auburn | Auburn | WA | — | ◇ UNVERIFIED |
| HRHarris Rebar - Birmingham | Riverside | AL | — | ◇ UNVERIFIED |
| HRHarris Rebar Fresno INC | Fresno | CA | — | ◇ UNVERIFIED |
| HRHarris Rebar North Carolina INC | Catawba | SC | — | ◇ UNVERIFIED |
| HRHarris Rebar Nufab LLC | Milton | FL | — | ◇ UNVERIFIED |
| HGHarry Gordon Steel Company | Winchester | KY | — | ◇ UNVERIFIED |
| HLHassett LLC Dba Roettger Welding | Stillwater | MN | — | ◇ UNVERIFIED |
| HIHaulmark Industries INC | El Mirage | AZ | — | ◇ UNVERIFIED |
| HSHavens Steel Company | Kansas City | MO | — | ◇ UNVERIFIED |
| HSHawe Steel Design | Butte | MT | — | ◇ UNVERIFIED |
| HWHawk Welding & Fabrication Company | Fort Worth | TX | — | ◇ UNVERIFIED |
| HJH.c Jeffries Tower Company, INC. | Porter | TX | — | ◇ UNVERIFIED |
| HDH & D Specialties INC | Knoxville | AR | — | ◇ UNVERIFIED |
| HSHd Supply Construction Supply LTD | Gilbert | AZ | — | ◇ UNVERIFIED |
| HSHd Supply Construction Supply LTD Fl133-6427 | Tampa | FL | — | ◇ UNVERIFIED |
| HSHd Supply Construction Supply, LTD Wc043 | Fort Collins | CO | — | ◇ UNVERIFIED |
| HRHeader Reinforcement CORP. | Fountain Valley | CA | — | ◇ UNVERIFIED |
| HAHeart Aerospace | El Segundo | CA | — | ◇ UNVERIFIED |
| HEHeartland Engineered Products LLC | Harrison | OH | — | ◇ UNVERIFIED |
| HMHeartland Metal Sales, LLC | Marion | IL | — | ◇ UNVERIFIED |
| HSHeartland Steel Products West, LLC LP | Lodi | CA | — | ◇ UNVERIFIED |
| HLHeavy & Light Welding/Fabrication, Inc. | Bend | OR | — | ◇ UNVERIFIED |
| HLHeavy Line Fabrication | Anna | TX | — | ◇ UNVERIFIED |
