Structural steel fabricators are an essential part of commercial and industrial building projects. To ensure your construction project is successfully completed, you’ll need to be in contact with the best in the industry. Here are the top steel fabricators in the US, as well as some information and statistics on their revenue, services, and more.
Table of Contents
What are structural steel fabricators?
A steel fabricator takes metals (mainly steel) and transforms them into a desired product in shape and form. Compared to building materials like aluminum, concrete, and wood, structural steel is stronger, making it a great material option for construction.
Steel fabrication is a fairly complicated process, encompassing a series of steps to effectively build structures. It’s more than just cutting, bending, and assembling pieces together through welding and fitting with bolts—steel fabrication sees processes like preparation through detailed drawings, painting, and delivery. The right material needs to be selected and managed throughout all the steps of fabrication.
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10 largest structural steel fabricators in the US
Here are the top steel fabricating companies in the country.
| Company Name | Date of Founding | Estimated Revenue (2022) |
| Mayville Engineering Company, Inc. (MEC) | 1945 | $480 to $505 million |
| BTD Manufacturing Inc. | 1979 | $364 million |
| O’Neal Manufacturing Services (OMS) | 1921 | $285 million |
| Ironform Corp. | 2013 | $240 million |
| Anchor Fabrication | 1990 | $215 million |
| IMS Companies, LLC. | 1998 | $198.6 million |
| Momentum Manufacturing Group | 1982 | $198 million |
| Major Tool & Machine | 1946 | $172 million |
| Robinson, Inc. | 1905 | $170 million |
| Maysteel Industries, LLC. | 1936 | $180 million |
1. Mayville Engineering Company, Inc. (MEC)
Mayville Engineering Company was founded in 1945, with their current headquarters situated in Mayville, Wisconsin. With 20 company locations and 2200+ employees, the company’s revenue last year totaled $454.8 million. Their projected revenue for 2022 is around $480 to $505 million.
Their services include fabrication for tubes, pipes, sheet metal, and plates. They mainly serve these markets: construction, transportation (including trucking and rail), military and defense, marine, and recreation.
2. BTD Manufacturing Inc.
BTD Manufacturing was established in 1979, headquartered in Detroit Lakes, Minnesota. They currently have 5 company locations and 1300+ employees, with a revenue of $296 million last year and a projected 2022 revenue of $364 million.
Like most of the other structural steel fabricators on this list, they offer pipe and tube fabrication, sheet metal fabrication, plate fabrication, and most importantly: structural steel fabrication. The markets they serve include: construction, agriculture, automotive (including light trucks and cars), energy and power generation, and recreation.
3. O’Neal Manufacturing Services (OMS)
O’Neal Manufacturing Services was founded in 1921. Their headquarters is located in Vestavia Hills, Alabama and they currently have 8 company locations with 1100+ employees. Their revenue last year was $234 million, and they’re projected to grow to $285 million in revenue in 2022.
They offer structural steel fabrication, tube and pipe fabrication, sheet metal fabrication, and plate fabrication. They serve construction, agriculture, material handling, and heavy equipment markets.
4. Ironform Corp.
Ironform Corp. was established in 2013 (fairly recently compared to the other steel fabricators on this list). Their headquarters is situated in Chicago, Illinois. With 8 company locations and 900+ employees, they had a $210 million revenue last year and are estimated to have a revenue of $240 million this year.
They offer fabrication services for structural steel, tubes and pipes, sheet metal, and plates, serving the construction, agriculture, energy and power generation, military and defense, and transportation markets.
5. Anchor Fabrication
Anchor Fabrication was founded in 1990, their headquarters situated in Fort Worth, Texas. They have 4 company locations and 800+ employees. Their revenue last year was $203 million, and their projected 2022 revenue is $215 million.
Their services include structural steel fabrication, tube and pipe fabrication, sheet metal fabrication, and plate fabrication. The markets they serve include construction, military and defense, transportation, rail and locomotive, and heavy equipment.
6. IMS Companies, LLC.
IMS Companies was established in 1998, with their headquarters in Des Plaines, Illinois. The company has 6 locations and 1000+ employees. Last year, their revenue totaled $171.8 million, and they’re expecting a projected 2022 revenue of $198.6 million.
Their main services center on sheet metal fabrication, and the markets they serve are automotive, transportation, electronics and precision equipment, medical and pharmaceutical, and appliance.
7. Momentum Manufacturing Group
Another one of the largest structural steel fabricators is Momentum Manufacturing Group, which was founded in 1982 with a headquarters located in Georgetown, Massachusetts. The company has 9 locations and around 700 employees. Their revenue last year was $168 million, and they’ve projected a revenue of $198 million in 2022.
They specialize in services like sheet metal fabrication, aluminum extrusion, precision machining, contract manufacturing, cable assemblies, thermal imaging, and powder coating. The markets they serve include: heavy equipment, medical and pharmaceutical, fitness and health, electronics and precision equipment, food service, and food processing.
8. Major Tool & Machine
Major Tool & Machine was established in 1946 and is based in Indianapolis, Indiana. They currently only have one company location with 400+ employees. Their revenue last year totaled $155 million, with a projected revenue of $172 million in 2022.
They offer services in structural steel fabrication and plate fabrication, serving markets like heavy equipment, aerospace, energy and power generation, military and defense, and oil and gas.
9. Robinson, Inc.
Robinson Inc. is a steel fabricator founded in 1905, based in De Pere, Wisconsin. They have 4 company locations and 500+ employees. Revenue last year totaled $150 million, and the company projects a 2022 revenue of $170 million.
Their services focus on structural steel fabrication, tube and pipe fabrication, and sheet metal fabrication. The markets they serve include heavy equipment, utilities and infrastructure, energy and power generation, medical and pharmaceutical, food processing, and food service.
10. Maysteel Industries, LLC.
Maysteel Industries was established in 1936. Their headquarters is located in Allenton, Wisconsin and they have 6 company locations with around 900 employees. Their revenue last year was $140 million, and their estimated revenue for 2022 is $180 million.
They center their services on sheet metal fabrication, and serve markets like utilities and infrastructure, energy and power generation, and telecommunications.
Steel fabricators FAQ
Who is the largest steel fabricator in the US?
The largest steel fabricator in the US is Mayville Engineering Company, Inc. (MEC). They have 20 locations and over 2,200 employees, with a revenue of $454.8 million last year.
What are the top 5 steel manufacturing companies?
The top 5 steel manufacturing companies in the US are Mayville Engineering Company, BTD Manufacturing Inc., O’Neal Manufacturing Services, Ironform Corp., and Anchor Fabrication. These companies are leaders in the industry with significant revenues and diverse service offerings.
What state produces the most steel?
Indiana is the state that produces the most steel in the United States. Indiana is home to steel fabricators such Major Tool & Machine, Geiger & Peters, Indiana Steel Fabricating, and Almet Inc.
What is the difference between a steel fabricator and a manufacturer?
A steel fabricator transforms raw steel into specific shapes and structures needed for construction projects. A steel manufacturer, on the other hand, produces the raw steel material from iron ore or recycled steel.
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