Structural Steel Fabrication

Fabricating structural steel beams, columns, and connections for buildings and infrastructure.

143 companies
Structural Steel Fabrication

Structural steel fabrication is the process of cutting, drilling, welding, and assembling steel beams, columns, braces, and connections that form the skeleton of buildings, bridges, and industrial structures. It is one of the highest-volume segments of the metal fabrication industry. Structural steel fabricators work from engineering drawings to produce members ready for field erection. The process typically involves receiving raw steel from service centers, CNC beam line processing (cutting, drilling, coping), welding connection plates and stiffeners, fit-up and assembly, and applying protective coatings. AISC-certified fabricators follow rigorous quality management systems. When selecting a structural steel fabricator, verify their AISC certification category matches your project requirements, confirm their capacity can handle your tonnage and schedule, and check their experience with similar project types (commercial buildings, industrial facilities, bridges). Location matters for structural steel due to the high cost of shipping heavy members.

Companies Offering Structural Steel Fabrication

SteelFab

Anchorage, AK

Alaska's largest locally-owned steel fabrication plant with 2,500 tons of inventory.

Structural Steel Fabrication Welding Plate Fabrication +1
AISC AWS D1 1
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Dunn Fabricators

Columbiana, AL

Steel fabrication from 35,000 sq ft facility serving Birmingham, Mobile, and Huntsville.

Structural Steel Fabrication Welding Drilling
AISC
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Southern Metal Fabricators

Pelham, AL

Pollution control systems, storage solutions, and material handling equipment.

Welding Plate Fabrication Structural Steel Fabrication +1
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Hodge Fabrication Inc.

Little Rock, AR

Locally owned Little Rock custom steel fabrication specialist since 1983.

Welding Mig Welding Structural Steel Fabrication +1
AWS D1 1
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Advanced Metal Sales (AMS)

Phoenix, AZ

AISC certified fabrication facility with AWS/ASME certified staff in Phoenix.

Structural Steel Fabrication Welding Tig Welding +2
AISC AWS D1 1
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AF Steel Fabricators

Chandler, AZ

AISC certified steel fabricator and erector in Chandler, AZ.

Structural Steel Fabrication Welding Assembly
AISC
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Jackrabbit Fabrication LLC

Tucson, AZ

Code-certified structural steel and pipe welding fabricator in Tucson.

Welding Structural Steel Fabrication Pipe Fabrication
AWS D1 1 ASME
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Able Steel Fabricators

Phoenix, AZ

AISC certified multi-state steel fabricator with Complex Coatings Endorsement.

Structural Steel Fabrication Welding Painting +1
AISC SSPC
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The Herrick Corporation

Stockton, CA

Major structural steel fabricator and erector serving the Western US since 1921.

Welding Structural Steel Fabrication Plate Fabrication +1
AISC AWS D1 1
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Joel Hewatt Company

Pittsburg, CA

Structural steel fabricator and erector serving Northern California for 30+ years.

Structural Steel Fabrication Welding Assembly
AISC
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Metalset, Inc.

Hayward, CA

Structural steel and architectural metal fabricator and erector in the Bay Area.

Structural Steel Fabrication Welding Sheet Metal Fabrication +1
AISC
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UA Steel Fabrication

Oakland, CA

Structural and architectural steel fabricator serving the Bay Area since 1983.

Structural Steel Fabrication Welding Assembly
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Antonio's Metal Works

San Diego, CA

Family-owned structural steel contractor in San Diego with 20+ years of experience.

Structural Steel Fabrication Welding Assembly
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S.S. Steel Fabricators, Inc.

San Diego, CA

Family-owned steel fabricator specializing in healthcare construction projects since 1983.

Structural Steel Fabrication Welding Assembly
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San Diego Steel Solutions

San Diego, CA

Structural steel and architectural metals fabricator focused on public sector projects in San Diego.

Structural Steel Fabrication Welding Assembly
AISC
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White's Steel

Oceanside, CA

Licensed structural steel and ornamental metals fabricator serving Southern California.

Structural Steel Fabrication Welding Assembly
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Ahlborn Structural Steel, Inc.

San Francisco, CA

Steel erection and ornamental metal fabrication company serving San Francisco and the Bay Area.

Structural Steel Fabrication Welding Assembly
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GPS Fabrication

Fresno, CA

Metal fabrication and food processing equipment company serving the Central Valley.

Structural Steel Fabrication Welding Tig Welding +2
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Pacific Steel Group

San Diego, CA

Leading reinforcing steel fabricator operating across the Western US from San Diego.

Structural Steel Fabrication Welding Shearing +1
AISC
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BAPKO Metal, Inc.

Orange, CA

Family-owned steel and architectural metal fabricator and installer since 1978.

Structural Steel Fabrication Welding Sheet Metal Fabrication +1
AISC
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MAS Metals, Inc.

Union City, CA

Miscellaneous, architectural, and structural metals fabricator in Union City.

Structural Steel Fabrication Welding Assembly
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Altitude Steel

Denver, CO

Family-owned structural steel distributor and custom fabricator in Denver for 20+ years.

Structural Steel Fabrication Welding Shearing +1
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IMI (Industrial Maintenance Inc.)

Commerce City, CO

Colorado's leading AISC-compliant steel fabricator and erector for 30+ years.

Structural Steel Fabrication Welding Assembly
AISC
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High Plains Steel Services

Windsor, CO

High-capacity structural steel fabricator handling projects up to 1,500 tons near Windsor, CO.

Structural Steel Fabrication Welding Plate Fabrication +1
AISC
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Redd Iron Inc.

Denver, CO

CNC-equipped structural steel and rail fabricator in Denver since 1998.

Structural Steel Fabrication Welding Cnc Machining
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Rio Grande Co.

Denver, CO

Structural steel supplier and fabricator with multiple Colorado locations.

Structural Steel Fabrication Welding Shearing
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Pikes Peak Steel

Colorado Springs, CO

Structural and decorative steel fabricator serving Colorado Springs builders.

Structural Steel Fabrication Welding Assembly
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Kendo Inc.

Commerce City, CO

Custom steel fabrication and metalwork solutions in Denver.

Structural Steel Fabrication Welding Assembly
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OG Welding and Steel Fabrication

Denver, CO

Full-service welding and steel fabrication shop serving the Denver metro area.

Welding Tig Welding Mig Welding +2
AWS D1 1
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Metalcraft Services of Tampa

Tampa, FL

Custom fabrication for chemical processing, energy, and water treatment in Tampa.

Welding Pipe Fabrication Plate Fabrication +1
ASME
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Showing 30 of 143 companies

Structural Steel Fabrication FAQ

What is AISC certification?

AISC (American Institute of Steel Construction) certification verifies that a steel fabricator has the personnel, organization, experience, procedures, knowledge, equipment, and commitment to produce fabricated structural steel of the required quality. Categories include Standard, Major, and Complex Steel Bridge.

What steel sections are used in structural fabrication?

Common structural sections include wide flange beams (W shapes), channels (C shapes), angles (L shapes), hollow structural sections (HSS/tube), and plate. These are specified by ASTM A36, A572 Grade 50, A992, and other structural steel grades.

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