NAICS 238120 - Structural Steel and Precast Concrete Contractors

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What is NAICS 238120

NAICS code 238120 covers establishments primarily engaged in erecting and assembling structural parts made from steel or precast concrete, including steel beams, structural steel components, and precast concrete products. These businesses specialize in the installation and reinforcement of steel construction products such as steel rods, bars, rebar, mesh, and cages that support poured-in-place concrete. The scope includes new construction, additions, alterations, maintenance, and repair work, making these contractors vital to the structural integrity of a wide variety of construction projects. Businesses operating under this sector are typically involved in heavy civil, commercial, and infrastructure projects requiring specialized knowledge in steel and concrete structural systems.

Industry Classification for NAICS 238120

This industry comprises establishments primarily engaged in (1) erecting and assembling structural parts made from steel or precast concrete (e.g., steel beams, structural steel components, and similar products of precast concrete) and/or (2) assembling and installing other steel construction products (e.g., steel rods, bars, rebar, mesh, and cages) to reinforce poured-in-place concrete. The work performed may include new work, additions, alterations, maintenance, and repairs.

Illustrative Examples:

  • Concrete product (e.g., structural precast, structural prestressed) installation
  • Rebar contractors
  • Erecting structural steel
  • Reinforcing steel contractors
  • Placing and tying reinforcing rod at a construction site
  • Structural steel contractors
  • Precast concrete panel, slab, or form installation

Breakdown for NAICS 238120

  • Focuses on erecting and assembling steel and precast concrete structural components.
  • Includes work on new construction, additions, alterations, maintenance, and repairs.
  • Covers installation of reinforcing steel products such as rebar, mesh, and cages.
  • Serves both commercial and government construction projects.
  • Subject to industry safety standards and government contracting regulations.
  • Often involves coordination with other specialty construction contractors.

Included Activities for NAICS 238120

  • Erecting structural steel beams and components at construction sites.
  • Installing precast concrete panels, slabs, and structural forms.
  • Placing and tying reinforcing steel rods and rebar for concrete reinforcement.
  • Assembling steel rods, bars, mesh, and cages to strengthen poured concrete.
  • Performing maintenance, alterations, and repairs on existing steel and concrete structures.
  • Coordinating with general contractors and engineers on structural installation.
  • Complying with safety and quality standards during structural assembly.
  • Utilizing cranes and specialized equipment for heavy steel and precast handling.

Business Types for NAICS 238120

  • Structural steel erection contractors
  • Precast concrete installation companies
  • Rebar and reinforcing steel contractors
  • Specialty subcontractors in steel and concrete reinforcement
  • Construction firms focusing on government infrastructure projects
  • Engineering and fabrication firms supplying structural components

Subcategories for NAICS 238120

  • Balcony, precast concrete, installation
  • Concrete product (e.g., structural precast, structural prestressed) installation
  • Concrete reinforcement placement
  • Curtain wall, precast concrete, installation
  • Erecting structural steel
  • Iron work, structural, contractors
  • Placing and tying reinforcing rod at a construction site
  • Precast concrete panel, slab, or form installation
  • Prestressed concrete beam, slab or other component installation
  • Rebar contractors
  • Reinforcing rod, bar, mesh and cage installation
  • Reinforcing steel contractors
  • Stairway, precast concrete, installation
  • Steel reinforcing contractors
  • Structural steel erecting or iron work contractors

Government Buyers for NAICS 238120

Government agencies such as the Department of Transportation, General Services Administration, Department of Defense, and local public works departments commonly procure services under NAICS 238120. These agencies require structural steel and precast concrete contractors to support infrastructure projects including bridges, government buildings, military facilities, and transportation terminals. The demand arises from the need for durable, safe, and code-compliant structures that support public safety and national defense objectives. Contracting with these businesses ensures that government projects meet stringent quality standards and timelines.

Contract Types & Procurement for NAICS 238120

Contracts under NAICS 238120 typically include fixed-price, cost-plus, and time-and-materials agreements, depending on project complexity and scope. Procurement methods often involve competitive bidding, best-value tradeoffs, and small business set-asides. Contract values range widely from small-scale repairs and maintenance contracts valued at tens of thousands of dollars to large-scale infrastructure projects exceeding several million dollars. Government agencies emphasize compliance with safety regulations, timely delivery, and quality workmanship in awarding contracts within this sector.

Details for NAICS 238120

Explore the hierarchy and related codes for this industry

NAICS Code Industry Title
236 Construction of Buildings
2361 Residential Building Construction
23611 Residential Building Construction
236115 New Single-Family Housing Construction (except For-Sale Builders)
236116 New Multifamily Housing Construction (except For-Sale Builders)
236117 New Housing For-Sale Builders
236118 Residential Remodelers
2362 Nonresidential Building Construction
23621 Industrial Building Construction
236210 Industrial Building Construction
23622 Commercial and Institutional Building Construction
236220 Commercial and Institutional Building Construction
237 Heavy and Civil Engineering Construction
2371 Utility System Construction
23711 Water and Sewer Line and Related Structures Construction
237110 Water and Sewer Line and Related Structures Construction
23712 Oil and Gas Pipeline and Related Structures Construction
237120 Oil and Gas Pipeline and Related Structures Construction
23713 Power and Communication Line and Related Structures Construction
237130 Power and Communication Line and Related Structures Construction
2372 Land Subdivision
23721 Land Subdivision
237210 Land Subdivision
2373 Highway, Street, and Bridge Construction
23731 Highway, Street, and Bridge Construction
237310 Highway, Street, and Bridge Construction
2379 Other Heavy and Civil Engineering Construction
23799 Other Heavy and Civil Engineering Construction
237990 Other Heavy and Civil Engineering Construction
238 Specialty Trade Contractors
2381 Foundation, Structure, and Building Exterior Contractors
23811 Poured Concrete Foundation and Structure Contractors
238110 Poured Concrete Foundation and Structure Contractors
23812 Structural Steel and Precast Concrete Contractors
238120 Current Structural Steel and Precast Concrete Contractors
23813 Framing Contractors
238130 Framing Contractors
23814 Masonry Contractors
238140 Masonry Contractors
23815 Glass and Glazing Contractors
238150 Glass and Glazing Contractors
23816 Roofing Contractors
238160 Roofing Contractors
23817 Siding Contractors
238170 Siding Contractors
23819 Other Foundation, Structure, and Building Exterior Contractors
238190 Other Foundation, Structure, and Building Exterior Contractors
2382 Building Equipment Contractors
23821 Electrical Contractors and Other Wiring Installation Contractors
238210 Electrical Contractors and Other Wiring Installation Contractors
23822 Plumbing, Heating, and Air-Conditioning Contractors
238220 Plumbing, Heating, and Air-Conditioning Contractors
23829 Other Building Equipment Contractors
238290 Other Building Equipment Contractors
2383 Building Finishing Contractors
23831 Drywall and Insulation Contractors
238310 Drywall and Insulation Contractors
23832 Painting and Wall Covering Contractors
238320 Painting and Wall Covering Contractors
23833 Flooring Contractors
238330 Flooring Contractors
23834 Tile and Terrazzo Contractors
238340 Tile and Terrazzo Contractors
23835 Finish Carpentry Contractors
238350 Finish Carpentry Contractors
23839 Other Building Finishing Contractors
238390 Other Building Finishing Contractors
2389 Other Specialty Trade Contractors
23891 Site Preparation Contractors
238910 Site Preparation Contractors
23899 All Other Specialty Trade Contractors
238990 All Other Specialty Trade Contractors

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