California · C-51
Licensed Structural Steel Contractors in California
Verify any C-51 structural steel contractor license against the official state licensing record. Showing 1,505 active licenses below.
About the C-51 classification
A C-51 — Structural Steel — license authorizes work within the structural steel trade as recognized by the California Contractors State License Board (CSLB). Before hiring, confirm the contractor's license is active and covers the specific scope of your project.
Licensed Structural Steel contractors in California
| License # | Business | City | Status | Issued | Expires |
|---|---|---|---|---|---|
| #1141855 | 21 RETROFIT & STEEL INC | carson | active | 08/11/2025 | 08/31/2027 |
| #1052629 | 7 DESIGNS IRON | antioch | active | 04/19/2019 | 04/30/2027 |
| #1038341 | A & E STEEL INC | pomona | active | 04/19/2018 | 04/30/2026 |
| #878716 | A & G MACHINE SHOP INC | salinas | active | 06/03/2006 | 06/30/2026 |
| #732321 | A & R STEEL FAB INC | norco | active | 02/07/1997 | 02/28/2027 |
| #654290 | A - 1 CRANE SERVICE | cottonwood | active | 09/17/1992 | 07/31/2027 |
| #912790 | A A A GENERAL WELDING INC | south gate | active | 03/21/2008 | 03/31/2026 |
| #970600 | A A IRON CO | sylmar | active | 03/05/2012 | 03/31/2026 |
| #1046933 | A ABSOLUTE CONSTRUCTION WELDING INC | lakeside | active | 11/15/2018 | 11/30/2026 |
| #613821 | A B S MANUFACTURERS INC | san jose | active | 02/27/1991 | 02/28/2027 |