Structural steel contractors in Fontana, CA

12 licenses with the C-51 classification list Fontana (San Bernardino County) as their address with the state, 12 of them active. Active licenses with nothing flagged come first.

• ✓Dale SauterA · C-51 · #1056959 Fontana · San Bernardino County Active
• ✓Figueroa Iron Works IncC-51 · #819323 Fontana · San Bernardino County Active
• ✓G E S Sheet Metal IncC-43 · C-51 · #280410 Fontana · San Bernardino County Active
• ✓Icon StructuresB · C-43 · C-51 · #729881 Fontana · San Bernardino County Active
• ✓Iron - Mex CorpC-51 · #903414 Fontana · San Bernardino County Active
• ✓Jj Portable WeldingC-51 · #1100810 Fontana · San Bernardino County Active
• ✓Kdr SteelC-23 · C-51 · #705970 Fontana · San Bernardino County Active
• ✓Monarch Ironworks CorporationC-51 · #1117075 Fontana · San Bernardino County Active
• ✓R N D Contractors IncA · C-51 · #898471 Fontana · San Bernardino County Active
• ✓S T L Fabrication IncC-4 · C-20 · C-36 · C-43 +3 · #927373 Fontana · San Bernardino County Active
• ✓Schroeder Iron CorporationC-51 · #678486 Fontana · San Bernardino County Active
• ✓W C Brown Welding IncC-51 · C-60 · #537342 Fontana · San Bernardino County Active

Source: CSLB license file, Nov 8, 2026All trades in Fontana