Industry: 1791—Structural Steel Erection
Special trade contractors primarily engaged in the erection of structural steel and of similar products of prestressed or precast concrete.
| Building front installation, metal—contractors | Iron work, structural—contractors |
| Concrete products, structural precast or prestressed: placing of—contractors | Metal furring—contractors |
| Concrete reinforcement, placing of—contractors | Steel work, structural—contractors |
| Curtain wall installation—contractors | Storage tanks, metal: erection—contractors |
| Elevator front installation, metal—contractors | Store front installation, metal—contractors |
| Codes |
Titles | Total Marketable US Businesses |
| 17910000 | Structural steel erection | 2,412 |
| 17919901 | Building front installation, metal | 90 |
| 17919902 | Concrete reinforcement, placing of | 224 |
| 17919903 | Elevator front installation, metal | 15 |
| 17919904 | Exterior wall system installation | 60 |
| 17919905 | Iron work, structural | 1,810 |
| 17919906 | Metal lath and furring | 26 |
| 17919907 | Precast concrete structural framing or panels, placing of | 127 |
| 17919908 | Smoke stacks, steel: installation and maintenance | 13 |
| 17919909 | Storage tanks, metal: erection | 121 |
