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 Erection4,563
179100Structural steel erection2,512
17910000Structural steel erection2,512
179199Structural steel erection, nec2,051
17919901Building front installation, metal84
17919902Concrete reinforcement, placing of162
17919903Elevator front installation, metal22
17919904Exterior wall system installation64
17919905Iron work, structural1,424
17919906Metal lath and furring23
17919907Precast concrete structural framing or panels, placing of132
17919908Smoke stacks, steel: installation and maintenance11
17919909Storage tanks, metal: erection129