| 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 |
| HMHammersmith Mfg. & Sls | Horton | KS | — | ◇ UNVERIFIED |
| HIHannah's Iron Works | Philadelphia | PA | — | ◇ UNVERIFIED |
| HOHanover Outdoor Products, Inc. | Hanover | PA | — | ◇ UNVERIFIED |
| HIHansford Industries, INC. | Sacramento | CA | — | ◇ UNVERIFIED |
| HIHansford Industries INC Dba Viking Steel | Sacramento | CA | — | ◇ UNVERIFIED |
| HEHarbor Enterprises LLC. | Thomasville | GA | — | ◇ UNVERIFIED |
| HOHarbor Ornamental, INC. | Torrance | CA | — | ◇ UNVERIFIED |
| HCHardie-tynes Co., INC | Birmingham | AL | — | ◇ UNVERIFIED |
| HRHarding Real Estate Holdings, LLC | Santa Ana | CA | — | ◇ UNVERIFIED |
 Hardric Laboratories | Waltham | MA | — | ◇ UNVERIFIED |
| Hardric Laboratories | Chelmsford | MA | — | ◇ UNVERIFIED |
| HWHard Way Enterprises, Inc. | Colorado Springs | CO | — | ◇ UNVERIFIED |
| HSHarliss Specialties Corporation | Westmoreland City | PA | — | ◇ 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 |
| HIHarsco Industrial Ikg | Channelview | TX | — | ◇ UNVERIFIED |
| HIHarsco Industrial Ikg | Garrett | IN | — | ◇ UNVERIFIED |
| HMHarshman Machine & Tool CO. | Saint Joseph | MO | — | ◇ UNVERIFIED |
| HMHart Mechanical & Electrical Contractors, INC | Perkasie | PA | — | ◇ UNVERIFIED |
| HIHaseltine Industrial Engravers INC | Mountain View | CA | — | ◇ 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 |
| HIHb Ives | New Haven | CT | — | ◇ 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 |
| HPHeartland Precision LLC | Wahpeton | ND | — | ◇ UNVERIFIED |
| HSHeartland Steel Products West, LLC LP | Lodi | CA | — | ◇ UNVERIFIED |
| HTHeat Transfer Specialists of Louisiana, INC. | Baton Rouge | LA | — | ◇ UNVERIFIED |
| HLHeavy & Light Welding/Fabrication, Inc. | Bend | OR | — | ◇ UNVERIFIED |
| HLHeavy Line Fabrication | Anna | TX | — | ◇ UNVERIFIED |
| HMHeavy Metal Corporation | Cranston | RI | — | ◇ UNVERIFIED |
| HMHeavy Metal Fabrication | Colorado Springs | CO | — | ◇ UNVERIFIED |
| HSHeavy Stone Rings LLC | Orem | UT | — | ◇ UNVERIFIED |
| HSHeckert Systems LLC | Kansas City | MO | — | ◇ UNVERIFIED |
| HMHec Manufacturing, INC. | Bardstown | KY | — | ◇ UNVERIFIED |
| HSHeintz Steel and Manufacturing Company | Saint Louis | MO | — | ◇ UNVERIFIED |
| HIHelser Industries of Nc | Sharpsburg | NC | — | ◇ UNVERIFIED |
| HFHenderson Fabrication | San Antonio | TX | — | ◇ UNVERIFIED |
| HWHenderson Welding, INC. | Chicago | IL | — | ◇ UNVERIFIED |
| HAHenry and Sons Construction | New Braunfels | TX | — | ◇ UNVERIFIED |
| HPHercules Project Company LLC | Palmetto | FL | — | ◇ UNVERIFIED |
| HSHercules Steel CO INC | Fayetteville | NC | — | ◇ UNVERIFIED |
| HSHercules Steel Company, Incorporated | Richlands | NC | — | ◇ UNVERIFIED |
| HWHercules Wrought Iron Works INC | Chantilly | VA | — | ◇ UNVERIFIED |
| HCHeritage Custom Fabricators | Princeton | IN | — | ◇ UNVERIFIED |
| HBHerman Binz & Sons Iron Works | Little Rock | AR | — | ◇ UNVERIFIED |
| HSHerman Steel Inc | Slatington | PA | — | ◇ UNVERIFIED |
| HSHermitage Steel, Incorporated | Richmond | VA | — | ◇ UNVERIFIED |
| HWHernandez Wrought Iron, INC. | Ontario | CA | — | ◇ UNVERIFIED |
| HMHerndon & Merry INC | Nashville | TN | — | ◇ UNVERIFIED |
| HFHerrera Fabricating INC. | Houston | TX | — | ◇ UNVERIFIED |
| HCHerrick CORP Dba San Bernardino Steel INC | San Bernardino | CA | — | ◇ UNVERIFIED |
| HSHerron Steel CO INC | Tallahassee | FL | — | ◇ UNVERIFIED |
| HMHG Metals | Indianapolis | IN | — | ◇ UNVERIFIED |
| HHH & H Fabricators INC | Warrior | AL | — | ◇ UNVERIFIED |
| HHH & H Farm Products Manufacturing | Bolivar | MO | — | ◇ UNVERIFIED |
| HHH Hirschberger CO INC | Portland | OR | — | ◇ UNVERIFIED |
| HIHigh Industries INC | Lancaster | PA | — | ◇ UNVERIFIED |
| HOHighland Ornamental Ironworks INC | Berryville | VA | — | ◇ UNVERIFIED |
| HPHigh Pressure Gas Cylndr. | Longview | TX | — | ◇ UNVERIFIED |
| HSHighway Systems, INC. | Ocala | FL | — | ◇ UNVERIFIED |
| HIHiler's Ironworks LLC | Cave Junction | OR | — | ◇ UNVERIFIED |
| HRHill Rebar INC | Corona | CA | — | ◇ UNVERIFIED |
| HCHillside Custom Machining & Fabrication, LLC | Denver | PA | — | ◇ UNVERIFIED |
| HNHimco National | Torrance | CA | — | ◇ UNVERIFIED |
| HNHimco Natl INC | Los Angeles | CA | — | ◇ UNVERIFIED |
| HWHinojosas Welding Service LLC | Alice | TX | — | ◇ UNVERIFIED |
| HEHirschfeld Energy Systems, LLC | San Angelo | TX | — | ◇ UNVERIFIED |
| HIHirschfeld Industries | San Angelo | TX | — | ◇ UNVERIFIED |
| HIHirschfeld Industries Group LP | Abilene | TX | — | ◇ UNVERIFIED |
| HIHirschfeld Industries LP | San Angelo | TX | — | ◇ UNVERIFIED |
| HMHispanic Mfg / Gonzalez Mfg | Detroit | MI | — | ◇ UNVERIFIED |
| HSHi Style Metal Design, Akop Pisikyan Dba | Sun Valley | CA | — | ◇ UNVERIFIED |
| HMHitech Metal Fabrication | Anaheim | CA | — | ◇ UNVERIFIED |
 Hi-Tech Metals, Inc. | Maspeth | NY | — | ◇ UNVERIFIED |
| HMHitec Metal Fabrication CORP. | Anaheim | CA | — | ◇ UNVERIFIED |
| HGHme Global LLC - Fusionone | New Iberia | LA | — | ◇ UNVERIFIED |
| HIHme INC | Topeka | KS | — | ◇ UNVERIFIED |
