| FABCO METAL PRODUCTS LLCDaytona Beach, FL · Active | Daytona Beach, FL | LLC | Feb 14, 2013 | Active |
| MID-STATE METALS LLCFort Lauderdale, FL · Active | Fort Lauderdale, FL | LLC | Jun 17, 2014 | Active |
| LT PROPERTY HOLDINGS, LLCFort Lauderdale, FL · Active | Fort Lauderdale, FL | LLC | Dec 19, 2006 | Active |
| LYNDON STEEL COMPANY LLCOakland Park, FL · Active | Oakland Park, FL | LLC | Mar 12, 2013 | Active |
| STEELER, INC.Fort Lauderdale, FL · Inactive | Fort Lauderdale, FL | Corporation | Apr 5, 1962 | Inactive |
| OVERSEAS STEEL FABRICATORS INCFort Lauderdale, FL · Inactive | Fort Lauderdale, FL | Corporation | Jan 23, 1967 | Inactive |
| KEL HOLDINGS, LLLPFort Lauderdale, FL · Inactive | Fort Lauderdale, FL | Partnership | Aug 9, 2000 | Inactive |
| CANAM HEAVY STRUCTURES INC.Location not reported, FL · Inactive | Location not reported, FL | Corporation | Aug 16, 2017 | Inactive |
| LANGSENKAMP/STEELER, INC.Fort Lauderdale, FL · Inactive | Fort Lauderdale, FL | Corporation | Jul 6, 1983 | Inactive |
| FLORIDA ROLLING DOOR, INC.Fort Lauderdale, FL · Inactive | Fort Lauderdale, FL | Corporation | Jan 30, 1986 | Inactive |
| CORAL PARK PLAZA, INC.Fort Lauderdale, FL · Inactive | Fort Lauderdale, FL | Corporation | Mar 17, 1986 | Inactive |
| ORANGE TURTLE, INC.Fort Lauderdale, FL · Inactive | Fort Lauderdale, FL | Corporation | Jun 26, 1986 | Inactive |
| ROOF STRUCTURES OF FLORIDA, INC.Fort Lauderdale, FL · Inactive | Fort Lauderdale, FL | Corporation | Sep 25, 1986 | Inactive |
| FS HOLDINGS LLCFort Lauderdale, FL · Inactive | Fort Lauderdale, FL | LLC | Jan 21, 2005 | Inactive |
| FS REAL ESTATE HOLDINGS LLCFort Lauderdale, FL · Inactive | Fort Lauderdale, FL | LLC | Nov 21, 2007 | Inactive |
| FS FT. LAUDERDALE, LLCFort Lauderdale, FL · Inactive | Fort Lauderdale, FL | LLC | Nov 27, 2007 | Inactive |
| FS DAYTONA, LLCFort Lauderdale, FL · Inactive | Fort Lauderdale, FL | LLC | Nov 27, 2007 | Inactive |
| GROUP IV JAX DEVELOPMENT III, INC.Jacksonville, FL · Inactive | Jacksonville, FL | Corporation | Jan 21, 2000 | Inactive |
| KEL INVESTMENTS, INC.Fort Lauderdale, FL · Inactive | Fort Lauderdale, FL | Corporation | Aug 4, 2000 | Inactive |
| GROUP IV INDUSTRIAL, INC.Jacksonville, FL · Inactive | Jacksonville, FL | Corporation | Jun 13, 2001 | Inactive |
| GROUP IV INDUSTRIAL II, INC.Jacksonville, FL · Inactive | Jacksonville, FL | Corporation | Jun 13, 2001 | Inactive |
| GROUP IV AVENUES, INC.Jacksonville, FL · Inactive | Jacksonville, FL | Corporation | Mar 21, 2003 | Inactive |
| STEEL FABRICATORS GP, INC.Fort Lauderdale, FL · Inactive | Fort Lauderdale, FL | Corporation | Apr 26, 2004 | Inactive |
| GROUP IV CECIL, INC.Jacksonville, FL · Inactive | Jacksonville, FL | Corporation | Dec 1, 2004 | Inactive |
| GROUP IV CORPORATE SQUARE, INC.Jacksonville, FL · Inactive | Jacksonville, FL | Corporation | Jul 6, 2005 | Inactive |
| STEEL CONTRACTORS INCORPORATEDLocation not reported, FL · Inactive | Location not reported, FL | Corporation | Jan 31, 1997 | Inactive |
| STEEL FABRICATORS, INC.Fort Lauderdale, FL · Inactive | Fort Lauderdale, FL | Corporation | Oct 7, 1998 | Inactive |
| GROUP IV JAX DEVELOPMENT II, INC.Jacksonville, FL · Active | Jacksonville, FL | Corporation | Nov 10, 1999 | Active |
| M K L, INC.Fort Lauderdale, FL · Inactive | Fort Lauderdale, FL | Corporation | Aug 27, 1991 | Inactive |