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—contractorsIron work, structural—contractors
Concrete products, structural precast or prestressed: placing of—contractorsMetal furring—contractors
Concrete reinforcement, placing of—contractorsSteel work, structural—contractors
Curtain wall installation—contractorsStorage tanks, metal: erection—contractors
Elevator front installation, metal—contractorsStore front installation, metal—contractors
Codes Titles Number of US Businesses
1791Structural Steel Erection4,712
179100Structural steel erection2,407
17910000Structural steel erection2,407
179199Structural steel erection, nec2,305
17919901Building front installation, metal85
17919902Concrete reinforcement, placing of181
17919903Elevator front installation, metal21
17919904Exterior wall system installation63
17919905Iron work, structural1,664
17919906Metal lath and furring22
17919907Precast concrete structural framing or panels, placing of131
17919908Smoke stacks, steel: installation and maintenance12
17919909Storage tanks, metal: erection126