National Steel City

What National Steel City does

National Steel City, LLC (NSC) is a privately held U.S. structural steel erection and industrial construction contractor specializing in complex, schedule-critical projects for power generation, automotive and advanced manufacturing, aerospace and transportation, mining and metals, sports and entertainment venues, and chemical/pulp-and-paper facilities. The company traces its origins to Steel City Erecting (founded 1943, Birmingham, AL) and was formed in its current configuration in 2005 when UNAMSCO created National Steel Constructors via merger, simultaneously acquiring National Riggers and Erectors and Steel City Erecting. Headquartered in Plymouth, Michigan with a corporate office in Birmingham, Alabama, NSC self-performs rigging and erecting, structural steel, process equipment installation, turn-key prime mechanical work, overhead crane installation (up to 500-ton capacity, 120-foot spans), and outage management.

NSC's service offering is anchored by a proprietary project execution framework built on detailed Work Breakdown Structures, resource-loaded schedules, two-week look-ahead schedules, crew-level work packages, daily production tracking, and earned value measurement — codified delivery discipline the company attributes to consistent on-time, on-budget outcomes. The SAWHORSE Safety Program and a data-driven Safety Analytics for Evaluation System underpin a safety record (EMR 0.54, Recordable Incident Rate ~5x below industry average, DART rate of 0.0, 22 safety awards in 20 years) that functions as a primary bid-winner in safety-critical industrial environments. AISC and ASME certifications, including being one of the nation's first AISC Certified Steel Erectors, qualify the firm for major utility, infrastructure, and industrial bids.

Commercially, NSC operates an enterprise field-sales motion targeting general contractors, EPCs, and project owners on large competitive-bid construction projects, with revenue earned project-by-project rather than via recurring subscriptions or product sales. Named enterprise and government customers include Scout Motors, Reliant Energy, Duke Energy, Pittsburgh International Airport, Kansas City International Airport, Southern Company, TVA, Mercedes-Benz, Boeing, Lambeau Field, Sprint Center Arena, Thyssenkrupp, IPSCO (SSAB), Wellman Chemical, Georgia Pacific, and Scott Paper. The firm is consistently ranked on ENR's Top 400 Specialty Contractors and Top 15 in the Steel Erector category for over two decades. Revenue figures are not publicly disclosed; the company is privately held with no disclosed institutional investors. Recent strategic moves include a leadership transition following the January 2025 passing of long-tenured CEO Robert J. Dunn, a partnership on the $2B Scout Motors EV production facility in 2024, the 2026 CURT Safety Excellence Constructor Award, and the January 2026 launch of a corporate YouTube channel.

Name

National Steel City

Legal name

National Steel City, LLC

Website

https://nsc-us.com

Company type

Private

Founded year

1943

Operating status

Operating

Headcount range

51–100 employees

Short description

National Steel City is a privately held U.S. structural steel erection and industrial construction contractor serving power, automotive, aerospace, mining, and entertainment sectors through competitive-bid projects, AISC/ASME-certified rigging, steel erection, equipment installation, and outage services.

Ownership category

akta.pro rank

Product category

Industrial Construction Services

NAICS

Structural Steel and Precast Concrete Contractors (238120), Structural Steel and Precast Concrete Contractors (23812)

SIC

Heavy Construction Other Than Bldg Const - Contractors (1600), Fabricated Structural Metal Products (3440)

akta.pro primary industry

Steel Erection & Structural Ironwork (EDAOAAAJ)

akta.pro secondary industries

Metals & Steel Mill Facility Construction (IMAFADAF), Bridge & Infrastructure Steel Components (IMADACAL)

Keywords

• Structural steel erection
• Industrial construction services
• Rigging and erecting
• Process equipment installation
• Steel erection contractor

Headquarters

HQ city

Plymouth

HQ country

United States

HQ region

North America

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Supply Chain, Infrastructure, Technology or R&D, Marketing or Sales

Revenue model

1. Structural Steel Erection Services: Project-based revenue from structural steel erection services for commercial and industrial construction projects. Revenue is earned through competitive bidding on construction contracts and direct engagement with general contractors and owners.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels4 records

Core offering

National Steel City is a commercial and industrial structural steel contractor that self-performs structural steel erection, equipment rigging, ductwork, process piping, welding, and general mechanical maintenance. Its core offerings are organized into six service lines — Rigging & Erecting, Structural Steel, Process Equipment, Turn-Key Prime Mechanical, Overhead Cranes, and Outages — delivered under two specializations: Commercial Steel (heavy industrial, mission-critical manufacturing plants, long-span roof structures, and high-profile commercial campuses) and Industrial Construction (power and utility facilities, steel mills, pulp/paper mills, chemical complexes, mining sites, and heavy manufacturing).

Product overview

National Steel City is a commercial and industrial structural steel contractor offering specialized construction services. The company's core offerings include Rigging & Erecting, Structural Steel, Process Equipment, Turn-Key Prime Mechanical, Overhead Cranes, and Outages services. These services are organized under two main specializations: Commercial Steel (for complex structural steel solutions in commercial builds) and Industrial Construction (for power, steel mills, chemical, and manufacturing facilities). NSC positions itself as a turnkey solutions provider with AISC and ASME certifications, serving diverse markets including power generation, aviation, aerospace, industrial manufacturing, and major public venues.

Differentiator

Problem solved

Functional benefit

Products and services

• Rigging & Erecting Turnkey rigging and erection solutions for industrial and commercial construction projects, including site and ground bearing pressure analysis, detailed load analysis, crane specification, critical lift plans, and installation or removal of components. Targeted at general contractors, EPCs, and industrial owners executing complex lifts.
• Structural Steel Structural steel erection services backed by AISC certification, featuring detailed erection procedures, precision planning, and stability engineering for complex commercial and industrial builds. Targeted at general contractors and owners of large commercial, aviation, power, and manufacturing facilities.
• Process Equipment Installation, relocation, renovation, and maintenance of rotating and static process equipment — including pumps, vessels, blowers, and material-handling systems — integrated with structural steel work. Targeted at power, chemical, pulp & paper, metals, and manufacturing facilities.
• Turn-Key Prime Mechanical Complete turn-key mechanical solutions emphasizing schedule certainty, tight cost control, and safe execution, integrating pipefitting, electrical, scaffolding, coatings, and insulation services. Targeted at industrial owners needing single-source mechanical execution.
• Overhead Cranes Expert installation and retrofit services for overhead crane systems with lifting capacities up to 500 tons and spans up to 120 feet, designed to minimize disruption to ongoing operations. Targeted at manufacturing, metals, and heavy industrial facilities.
• Outages Precision planning and coordination for planned and emergency outages, managing complex sequencing and multi-party coordination with a perfect record of meeting every outage completion and return-to-service date. Targeted at power, chemical, pulp & paper, and industrial plant operators.
• Commercial Steel Complex structural steel solutions for demanding commercial builds, including heavy industrial facilities, mission-critical manufacturing plants, long-span roof structures, and high-profile commercial campuses. Targeted at general contractors and owners of large-scale commercial projects.
• Industrial Construction Industrial construction services focused on structural steel erection and equipment installation for power and utility facilities, steel mills, pulp and paper mills, chemical complexes, mining sites, and heavy manufacturing. Targeted at owners, EPCs, and GCs in industrial markets.

Quantifiable outcome

• OSHA Recordable Incident Rate approximately 5 times lower than industry average
• +7 more outcomes

Named customers16 records

Segments7 records

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

One partnership is on record.

• Merrill SteelminorStrategic or Co-development PartnerNSC partnered with Merrill Steel on the Scout Motors production center project in Blythewood, South Carolina. The partnership involved a buildout of Scout Motors' electric vehicle assembly building.

Scale indicators10 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Zalk Josephs Fabricators / Stiles & Hart Brick Co. Structural steel erection contractor handling industrial and commercial projects across the Midwest; similar AISC-certified, employee-headcount band to NSC.
• Benson & Lange Companies: Structural steel erection and heavy rigging contractor serving industrial markets including power and metals; directly comparable in craft mix and project size classes.
• Shelby Erectors, Inc. Mid-Atlantic/Midwest steel erector focused on industrial and commercial structural steel erection; comparable AISC-certified, project-bid operating profile to NSC.
• Havens Steel Company: A specialty structural steel erector historically tied to NRE (Bob Dunn's prior employer), directly competing on AISC-certified field erection of complex industrial and commercial projects across the US.
• Midwest Steel, Inc. Major AISC-certified steel erector with national reach across power, industrial, and commercial work; comparable in scope, customer mix, and ENR Top Steel Erector category.
• Deem Structural Steel: AISC-certified structural steel erector serving power, petrochemical, and heavy industrial markets; similar project-based, single-time revenue model and self-performed craft scope as NSC.

Broad incumbents

• AECOM (Construction Services): Global engineering and construction firm that competes for large industrial, power, and aviation capital projects as a general contractor/EPC, overlapping with NSC on owner-direct bids.
• MasTec, Inc. Diversified infrastructure construction firm with energy, utility, and industrial structural/steel erection capability; broader but directly contestable on power and heavy industrial scopes.

Emerging players

• Phoenix Steel Erectors: Niche AISC erector focused on complex commercial and light-industrial projects; comparable capability profile but smaller scale relative to NSC's marquee scopes.

Regional players

• ARB, Inc. (Structural Steel): Western US structural steel erector serving commercial and industrial markets; competes for similar project types but with regional rather than national footprint.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks7 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/@NSC-US
• LinkedInlinkedin.com/company/national-steel-city-llc

Compliance3 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles6 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about National Steel City